不同包膜肥用量对油菜碳氮代谢产物和产量的影响
作者：
杨勇;刘强;宋海星;田昌
期刊：
中国农学通报 ,2017年33(6):42-47 ISSN：1000-6850
作者机构：
湖南农业大学资源环境学院/土壤肥料资源高效利用国家工程实验室/农田污染控制与农业资源利用湖南省重点实验室/植物营养湖南省普通高等学校重点实验室,长沙,410128;[田昌; 杨勇; 刘强; 宋海星] 植物营养湖南省普通高等学校
关键词：
油菜;包膜肥;碳氮代谢;产量
摘要：
为研究包膜肥在直播早熟油菜上的应用效果,采用田间小区试验,探究不同用量包膜肥对‘湘杂油1613’碳氮代谢和籽粒产量的影响。结果表明,施肥量相同条件下,施用包膜肥油菜碳氮代谢活跃,叶绿素含量（SPAD）升高,可溶性糖和游离氨基酸总量增加,含量差异不明显;单株有效分枝数和角果数明显增加,每角果粒数和千粒重小幅提高。施用包膜肥增产效果明显,包膜肥施肥量为1500 kg/hm2时产量最高,达到2066.9 kg/hm2。通过拟合建模,包膜肥用量为1611.0 kg/hm2时,产量达到最高为2164.9 kg/hm2;而普通肥的用量为1870.5 kg/hm2时,最高产量为1904.8 kg/hm2,包膜肥产量增加13.6%,同时用量减少13.9%。
语种：
中文
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Boric acid assisted synthesis of WO3 nanostructures with highly reactive (002) facet and enhanced photoelectrocatalytic activity
作者：
Zhan, Faqi;Liu, Wenhua;Li, Wenzhang;Li, Jie* ;Yang, Yahui;...
期刊：
Journal of Materials Science: Materials in Electronics ,2017年28(18):13836-13845 ISSN：0957-4522
通讯作者：
Li, Jie
作者机构：
[Zhan, Faqi; Li, Jie; Liu, Qiong; Li, Wenzhang; Liu, Wenhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.;[Tang, Xinde] Hunan Inst Technol, Dept Mat & Chem Engn, Hengyang 421002, Peoples R China.
通讯机构：
[Li, Jie] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
摘要：
This article describes the synthesis of monoclinic WO3 nanostructures with highly reactive (002) facets exposed through a facile hydrothermal method using boric acid as the guiding agent. The obtained WO3 plate films exhibit an excellent photocurrent density of 1.64 mA/cm2 at 1.2 V (vs. Ag/AgCl) and an IPCE value of 66.7% at 355 nm at a bias of 0.8 V (vs. Ag/AgCl). Furthermore, a maximum 2.8-time higher formic acid yields was obtained in a versatile photoanode-driven PEC CO2 reduction system. The pronounced enhancement in photoelectrocatalytic activity can be attributed to the reduced recombination of photogenerated electron–hole pairs, longer electron lifetime, larger photogenerated carrier density, higher reactivity for water oxidation and more effective production of active oxygen species on exposed (002) facets, which were obtained through the capping effect of boric acid. This work provides a facile and promising approach to synthesize the specific facet-exposed photocatalysts with better photoelectrochemical performance. © 2017, Springer Science+Business Media New York.
语种：
英文
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In situ Sn-doped WO3 films with enhanced photoelectrochemical performance for reducing CO2 into formic acid
作者：
Yang, Yahui* ;Zhan, Faqi;Li, Hang;Liu, Wenhua;Yu, Sha
期刊：
Journal of Solid State Electrochemistry ,2017年21(8):2231-2240 ISSN：1432-8488
通讯作者：
Yang, Yahui
作者机构：
[Li, Hang; Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Yu, Sha; Zhan, Faqi; Liu, Wenhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Yang, Yahui] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
WO3 films;In situ Sn doping;Photoelectrochemical;CO2
摘要：
We report exploiting effective Sn incorporation to enhance the photoelectrochemical activity of WO<inf>3</inf>plate films, applied as photoanodes for photoelectrocatalytic (PEC) CO<inf>2</inf>reduction into formic acid (HCOOH). The in situ Sn-doped WO<inf>3</inf>films were prepared on a fluorine-doped tin oxide (FTO) substrates by a hydrothermal method with adding Na<inf>2</inf>SnO<inf>3</inf>as the Sn precursor. Sn dopants were confirmed with an X-ray photoelectron spectroscopy (XPS), which enlarged the growth density and crystallinity of WO<inf>3</inf>plate films. Comparing the PEC properties, Sn-doped WO<inf>3</inf>anode exhibits a photocurrent density of 1.11 mA/cm<sup>2</sup>at 1.2 V vs. Ag/AgCl, which is approximately 1.4 times higher than that of the undoped films. The highest IPCE value increased from 28.3% to 45.1% after Sn doping, which is approximately 1.6 times higher than that of the undoped ones. After 3 h for PEC reduction of CO<inf>2</inf>, the maximum formic acid yield of Sn-doped WO<inf>3</inf>film is 485 nmol/cm<sup>2</sup>, while that of undoped WO<inf>3</inf>film is 206 nmol/cm<sup>2</sup>. Based on the electrochemical and photoelectrochemical analysis, the enhanced PEC performance in Sn-doped WO<inf>3</inf>films owes to its improved carriers density, electrical conductivity, and electrons lifetime. This is the first report to investigate the effect of Sn doping on the photoelectrochemical properties of WO<inf>3</inf>nanostructures. ©2017, Springer-Verlag Berlin Heidelberg.
语种：
英文
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A flexible polycation-type anion-dominated conducting polymer as potential all-solid-state supercapacitor film electrolyte
作者：
Yang, Yahui;Cao, Bianmei;Li, Hang;Liu, Hongtao*
期刊：
Chemical Engineering Journal ,2017年330:753-756 ISSN：1385-8947
通讯作者：
Liu, Hongtao
作者机构：
[Li, Hang; Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Cao, Bianmei; Liu, Hongtao] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Liu, Hongtao] Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Liu, Hongtao] C;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
All-solid-state supercapacitor;Polycation-type conducting copolymer;Solid polymer electrolyte
摘要：
Cation-polymerized ionic liquids and non-ionic polymer monomers can be facile to chain into performance-enhanced conducting copolymers in combination with their respective features. A novel highly-flexible Br-based polycationic conducting copolymer is presented that shows both wide electrochemical window (6.0 V) and high ionic conductivity (2.04 × 10−6 S·cm−1 at 25 °C, 3.09 × 10−4 S·cm−1 at 60 °C), capable of potential solid polymer electrolyte. A 4.2 V flexible all-solid-state C/C supercapacitor is evaluated by using the poly(VAc-co-EVImBr) thin-film electrolyte. The exhibited superior charge-discharge capabilities at both 25 °C and 60 °C support strongly the applicable perspective of the proposed solid copolymer electrolyte. © 2017
语种：
英文
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Photoelectrochemical Properties and Photocatalytic Activity of Fluorine-Doped Plate-Like WO3 from Hydrothermal Radio-Frequency (RF) Sputtered Tungsten Thin Films
作者：
Yang, Yahui* ;Jin, Guanhua;Li, Hang
期刊：
NANO ,2017年12(4):1750041 ISSN：1793-2920
通讯作者：
Yang, Yahui
作者机构：
[Li, Hang; Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Jin, Guanhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Yang, Yahui] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Fluorine-doped;tungsten oxide;photoelectrochemistry;photocatalysis
摘要：
Fluorine-doped tungsten oxide (WO3) plate-like films were synthesized by hydrothermal radio-frequency (RF) sputtered tungsten (W) thin films in HF solution. The crystal structure, composition and morphology of nitrogen fluorine (F) doped WO3 were characterized by scanning electron microscope (SEM), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), and UV-Vis diffuse reflectance spectra (DRS) techniques. The results indicate that fluorine can be doped successfully into WO3 plate-like films by hydrothermal synthesis in hydrofluoric acid (HF) solution. The F-doped WO3 samples show stronger absorption in the UV-Vis range and a red shift in the band gap transition. Incident photon to current efficiency (IPCE) measurements carried out on photoelectrochemical cell with F-doped WO3 plate-like films as anodes demonstrate a significant increase of photoresponse in the visible region compared with undoped WO3. The photocatalytic activity under visible light irradiation for newly synthesized F-doped WO3 plate-like films was investigated by degradation of methyl orange. The photocatalytic activity of F-doped WO3 plate-like films was 3-fold enhancement compared with pure WO3 samples.
语种：
英文
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Comparison of three types of oil crop rotation systems for effective use and remediation of heavy metal contaminated agricultural soil
作者：
Yang, Yang;Zhou, Xihong;Tie, Boqing;Peng, Liang;Li, Hongliang;...
期刊：
Chemosphere ,2017年188(Dec.):148-156 ISSN：0045-6535
通讯作者：
Zeng, Qingru
作者机构：
[Zeng, Qingru; Yang, Yang] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.;[Zhou, Xihong; Peng, Liang; Tie, Boqing; Zeng, Qingru; Li, Hongliang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Wang, Kelin; Yang, Yang] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[Wang, Kelin; Yang, Yang] Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Guangxi, Peoples R China.
通讯机构：
[Zeng, Qingru] H;Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.
关键词：
Phytomanagement;Rotation;Oil crops;Seed meals;Contaminated agricultural soil;Heavy metal extraction
摘要：
Selecting suitable plants tolerant to heavy metals and producing products of economic value may be a key factor in promoting the practical application of phytoremediation polluted soils. The aim of this study is to further understand the utilization and remediation of seriously contaminated agricultural soil. In a one-year field experiment, we grew oilseed rape over the winter and then subsequently sunflowers, peanuts and sesame after the first harvest. This three rotation system produced high yields of dry biomass; the oilseed rape-sunflower, oilseed rape-peanut and oilseed rape-sesame rotation allowed us to extract 458.6, 285.7, and 134.5 g ha−1 of cadmium, and 1264.7, 1006.1, and 831.1 g ha−1 of lead from soil, respectively. The oilseed rape-sunflower rotation showed the highest phytoextraction efficiency (1.98%) for cadmium. Lead and cadmium in oils are consistent with standards after extraction with n-hexane. Following successive extractions with potassium tartrate, concentrations of lead and cadmium in oilseed rape and peanut seed meals were lower than levels currently permissible for feeds. Thus, this rotation system could be useful for local farmers as it would enable the generation of income during otherwise sparse phytoremediation periods. © 2017
语种：
英文
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三种类型阻控剂对不同品种水稻富集镉的影响
作者：
龙思斯;杨益新;宋正国;雷鸣;杨勇;...
期刊：
农业资源与环境学报 ,2016年33(5):459-465 ISSN：2095-6819
作者机构：
湖南农业大学资源环境学院;湖南省湘阴县农业局;[沈跃; 宋正国] 农业部环境保护科研监测所;[蒋宏芳] 湖南安邦新农业科技股份有限公司;[龙思斯; 雷鸣; 杨勇; 周爽; 喻理] 湖南农业大学
关键词：
水稻;石灰;硅肥;叶面锌肥;富集
摘要：
如何降低水稻中镉（Cd）的含量已经成为一个研究热点。在湖南省衡阳县某地受轻度镉污染的农田上种植两季水稻（早稻、晚稻），随机采购市场上销售的阻控剂（石灰、硅肥和叶面锌肥），研究这3种类型阻控剂对水稻富集镉及稻谷中镉含量的影响，这3种类型的阻控剂的施用方式是石灰和硅肥作为基肥施于土壤，叶面锌肥通过叶面喷施。结果表明：与没有施加阻控剂相比，除石灰和晚稻锌处理之外，其他处理增产效果显著。在3种类型的阻控剂中，叶面锌肥对籽实富集镉的阻控效果最佳，分别使早稻Y俩优792和晚稻农香130降低了51.28%和50.92%，基施硅肥阻镉效果次之。田间试验结果进一步表明施硅肥和喷施叶面锌肥可作为当地的水稻镉污染阻控剂，但叶面锌肥与稻谷中镉的交互作用需要更深入的探讨。
语种：
中文
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A novel Bi2S3 nanowire @ TiO2 nanorod heterogeneous nanostructure for photoelectrochemical hydrogen generation
作者：
Liu, Canjun;Yang, Yahui;Li, Wenzhang* ;Li, Jie* ;Li, Yaomin;...
期刊：
Chemical Engineering Journal ,2016年302:717-724 ISSN：1385-8947
通讯作者：
Li, Wenzhang;Li, Jie
作者机构：
[Li, Jie; Liu, Canjun; Li, Wenzhang; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Jie; Liu, Canjun; Li, Wenzhang; Chen, Qiyuan] Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.
通讯机构：
[Li, WZ; Li, J] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
Bi2S3 nanowire;Heterogeneous nanostructure;Hydrogen generation;Photoelectrochemical;TiO2 nanorod
摘要：
In this paper, we demonstrate a novel heterogeneous nanostructure by grafting the Bi2S3 nanowires (NWs) on TiO2 nanorod arrays (NRs) and the prepared films as photoanodes show an excellent photoelectrochemical (PEC) hydrogen generation performance. The hydrogen evolution rate is 35.97 μmol cm-2 h-1 at a potential of 0.676 V vs. RHE (-0.2 V vs. Ag/AgCl) under visible light illumination. Importantly, the growth mechanism of such a heterogeneous nanostructure is put forward firstly and the intrinsic nature of Bi2S3 crystal structure is the main reason of the growth orientation. It is potential for the versatile preparation method to apply in the synthesis of other Bi2S3 based hybrid films. © 2016 Elsevier B.V..
语种：
英文
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Efficient solar water oxidation by WO3 plate arrays film decorated with CoOx electrocatalyst
作者：
Zhan, Faqi;Liu, Wenhua;Li, Wenzhang* ;Li, Jie* ;Yang, Yahui;...
期刊：
International Journal of Hydrogen Energy ,2016年41(28):11925-11932 ISSN：0360-3199
通讯作者：
Li, Wenzhang;Li, Jie
作者机构：
[Zhan, Faqi; Li, Jie; Li, Wenzhang; Liu, Wenhua; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Zhan, Faqi; Li, Jie; Li, Wenzhang; Liu, Wenhua; Chen, Qiyuan] Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.
通讯机构：
[Li, WZ; Li, J] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
Solar water oxidation;WO3 plate arrays;CoOx electrocatalyst
摘要：
We report the synthesis and photoelectrochemical characterization of CoO<inf>x</inf>oxygen evolution catalyst modified two-dimensional (2D) WO<inf>3</inf>plate arrays photoelectrode. The 2D-WO<inf>3</inf>plate arrays were prepared perpendicularly on the FTO substrate by hydrothermal method. The CoO<inf>x</inf>nanoparticles were deposited on the surface of WO<inf>3</inf>plate arrays on FTO by chemical deposition process. The CoO<inf>x</inf>nanoparticles are distributed on the surface of WO<inf>3</inf>plates with a diameter of about 20 nm. The CoO<inf>x</inf>/WO<inf>3</inf>film shows enhanced photoelectrochemical performance than the bare WO<inf>3</inf>film. The highest incident-photon-to-current-efficiency (IPCE) value increases from 24.9% to 49.1% when introducing CoO<inf>x</inf>. The deposited CoO<inf>x</inf>electrocatalyst on WO<inf>3</inf>surface can transfer holes effectively through the cobalt ion valency cycle, suppress the hole's accumulation and recombination at the electrode surface, achieve the superior kinetics and consequently enhance the overall solar water oxidation efficiency. ©2016 Hydrogen Energy Publications LLC
语种：
英文
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Construction of novel Bi2S3 nanobelt @ WO3 nanoplate arrays on FTO glass with high photoelectrochemical activity
作者：
Liu, Canjun;Yang, Yahui;Li, Wenzhang* ;Li, Jie* ;Li, Yaomin;...
期刊：
International Journal of Hydrogen Energy ,2016年41(14):5878-5886 ISSN：0360-3199
通讯作者：
Li, Wenzhang;Li, Jie
作者机构：
[Li, Jie; Liu, Canjun; Li, Wenzhang; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.
通讯机构：
[Li, WZ; Li, J] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
关键词：
Tungsten oxide;Bismuth sulfide;Nanobelt;Photoelectrochemical;Water splitting
摘要：
In this work, a novel Bi<inf>2</inf>S<inf>3</inf>nanobelt/WO<inf>3</inf>nanoplate array film was prepared firstly by a facile two-step hydrothermal method with a successive annealing treatment. The as-prepared sample was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometer (EDS), X-ray diffraction (XRD) and ultraviolet visible spectrometry (UV-vis). The results show that Bi<inf>2</inf>S<inf>3</inf>nanobelts epitaxially grow on the surface of WO<inf>3</inf>nanoplates and the films have an excellent visible light absorption performance. Moreover, when investigated as photoanode for photoelectrochemical (PEC) cells, such novel Bi<inf>2</inf>S<inf>3</inf>nanobelt @ WO<inf>3</inf>nanoplate photoanodes exhibited a high PEC activity and generated a photocurrent density of 8.91 mA cm<sup>-2</sup>at -0.1 V vs. Ag/AgCl in the electrolyte solution containing 0.1 M Na<inf>2</inf>SO<inf>3</inf>and 0.1 M Na<inf>2</inf>S. The remarkable PEC activity of the photoanode may be ascribed to the efficient charge transfer and increased surface areas in the photoelectrode. ©2016 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
语种：
英文
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控释肥料对早熟油菜产量、养分吸收和肥料利用率的影响
作者：
Tian, Chang;Zhou, Xuan;Liu, Qiang;Peng, Jian-wei;Wang, Wen-ming;...
期刊：
浙江大学学报(英文版)B辑：生物医学与生物技术 ,2016年17(10):775-786 ISSN：1673-1581
通讯作者：
Song, Hai-xing
作者机构：
[Wang, Wen-ming; Zhang, Zhen-hua; Tian, Chang; Liu, Qiang; Peng, Jian-wei; Song, Hai-xing; Yang, Yong] Hunan Agr Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Hunan Prov Key Lab Plant Nutr Common Univ,Natl En, Changsha 410128, Hunan, Peoples R China.;[Zhou, Xuan] Zhejiang Univ, Coll Environm Sci & Resources, Hangzhou 310058, Zhejiang, Peoples R China.;[Guan, Chun-yun] Natl Ctr Oilseed Crops Improvement, Hunan Branch, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Song, Hai-xing] H;Hunan Agr Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Hunan Prov Key Lab Plant Nutr Common Univ,Natl En, Changsha 410128, Hunan, Peoples R China.
关键词：
Early ripening rapeseed;Controlled-release fertilizer;Yield;Nutrient uptake;Fertilizer usage efficiency
摘要：
Background: Nitrogen (N), phosphorous (P), and potassium (K) are critical nutrient elements necessary for crop plant growth and development. However, excessive inputs will lead to inefficient usage and cause excessive nutrient losses in the field environment, and also adversely affect the soil, water and air quality, human health, and biodiversity. Methods: Field experiments were conducted to study the effects of controlled-release fertilizer (CRF) on seed yield, plant growth, nutrient uptake, and fertilizer usage efficiency for early ripening rapeseed (Xiangzayou 1613) in the red-yellow soil of southern China during 2011–2013. It was grown using a soluble fertilizer (SF) and the same amounts of CRF, such as SF1/CRF1 (3750 kg/hm~2), SF2/CRF2 (3000 kg/hm~2), SF3/CRF3 (2250 kg/hm~2), SF4/CRF4 (1500 kg/hm~2), SF5/CRF5 (750 kg/hm~2), and also using no fertilizer (CK). Results: CRF gave higher seed yields than SF in both seasons by 14.51%. CRF4 and SF3 in each group achieved maximum seed yield (2066.97 and 1844.50 kg/hm~2, respectively), followed by CRF3 (1929.97 kg/hm~2) and SF4 (1839.40 kg/hm~2). There were no significant differences in seed yield among CK, SF1, and CRF1 (P>0.05). CRF4 had the highest profit (7126.4 CNY/hm~2) and showed an increase of 12.37% in seed yield, and it decreased by 11.01% in unit fertilizer rate compared with SF4. The branch number, pod number, and dry matter weight compared with SF increased significantly under the fertilization of CRF (P<0.05). The pod number per plant was the major contributor to seed yield. On the other hand, the N, P, and K uptakes increased at first and then decreased with increasing the fertilizer rate at maturity, and the N, P, and K usage efficiency decreased with increasing the fertilizer rate. The N, P, and K uptakes and usage efficiencies of the CRF were significantly higher than those of SF (P<0.05). The N accumulation and N usage efficiency of CRF increased by an average of 13.66% and 9.74 percentage points, respectively, compared to SF. In conclusion, CRF significantly promoted the growth of rapeseed with using total N as the base fertilizer, by providing sufficient N in the later growth stages, and last by reducing the residual N in the soil and increasing the N accumulation and N usage efficiency.
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英文
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不同氮肥增效剂对水稻产量和养分利用率的影响
作者：
石柱;张丹;杨奇志;杨勇
期刊：
作物研究 ,2016年30(1):14-17 ISSN：1001-5280
作者机构：
[杨奇志; 张丹; 石柱] 长沙县农业局;湖南农业大学资源环境学院;[杨勇] 湖南农业大学
关键词：
水稻;施肥;氮肥增效剂;肥料利用率;产量
摘要：
采用田间小区试验,研究不同氮肥增效剂在水稻上的应用效果.结果表明：氮肥增效剂增产效果明显,有效穗数和每穗粒数显著增加.添加双氰胺的增产效果最好,产量达到7982.8kg/hm^2,添加氢醌和复合增效剂的产量分别为7922.9和7892.2kg/hm^2,增产幅度在4.95% ～6.15%之间.氮肥增效剂增加水稻养分含量和积累量,提高肥料利用率,氮磷钾肥料利用率分别提高4.22% ～8.44%、3.87% ～7.40%、2.90% ～8.72%.添加双氰胺的氮钾肥料利用率最高,分别达到64.21%和48.45%.
语种：
中文
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Enhanced photoelectrochemical performance of plate-like WO3 induced by surface oxygen vacancies
作者：
Liu, Yang;Li, Jie;Tang, Hui;Li, Wenzhang* ;Yang, Yahui* ;...
期刊：
Electrochemistry Communications ,2016年68:81-85 ISSN：1388-2481
通讯作者：
Li, Wenzhang;Yang, Yahui
作者机构：
[Tang, Hui; Li, Jie; Liu, Yang; Li, Wenzhang; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WCIH 0AJ, England.
通讯机构：
[Li, Wenzhang] C;[Yang, Yahui] H;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Plate-like tungsten oxide;Oxygen vacancies;Water splitting;Photoelectrochemistry
摘要：
The plate-like WO3 photo-electrode with surface oxygen vacancies was fabricated via a H2O2 treatment method for the first time. The concentration of oxygen vacancies could be controlled by tuning the treatment time in H2O2 solution. Under visible light, the WO3 plate anodes with different concentration of surface oxygen vacancies were evaluated for photoelectrochemical water splitting and the optimum photocurrent was about 1.5 times as high as that of pure WO3. This study presents a new insight into improving the light-to-electricity conversion efficiency of WO3 by introducing surface oxygen vacancies. (C) 2016 Elsevier B.V. All rights reserved.
语种：
英文
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云南省南涧县“2260”工程植烟土壤养分状况分析
作者：
李宏图;杨勇;熊镇贵;章钦印;周廷中
期刊：
作物研究 ,2016年30(6):719-721,725 ISSN：1001-5280
作者机构：
[章钦印; 熊镇贵; 周廷中; 李宏图] 云南省烟草公司大理州公司;湖南农业大学资源环境学院;[杨勇] 湖南农业大学
会议名称：
推进湖南农业供给侧结构性改革论坛
会议时间：
2016-11-01
会议地点：
长沙
会议论文集名称：
推进湖南农业供给侧结构性改革论坛论文集
关键词：
烟草;土壤;养分;南涧县
摘要：
对2016年云南省实施“2260”优质烟叶工程的南涧县3个乡镇109个土壤样品进行化验分析，评价3个乡镇土壤养分状况。结果表明：南涧县实施“2260”优质烟叶工程的3个乡镇土壤pH平均值为6.27，pH范围在5.0～7.0之间的比例为77.06％，土壤有机质平均含量为34.12 g／kg，碱解氮平均含量为120.36 mg／kg，有效磷平均含量为20.74 mg／kg，速效钾平均含量为225.58 mg／kg。整体来看南涧县“2260”实施乡镇土壤养分状况整体比较均衡，适宜‘红花大金元’烤烟种植。
语种：
中文
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Electrochemical Doping Induced in Situ Homo-species for Enhanced Photoelectrochemical Performance on WO3 Nanoparticles Film Photoelectrodes
作者：
Liu, Yang;Li, Jie;Li, Wenzhang* ;He, Haizhou;Yang, Yahui;...
期刊：
Electrochimica Acta ,2016年210:251-260 ISSN：0013-4686
通讯作者：
Li, Wenzhang
作者机构：
[Li, Jie; Liu, Yang; Li, Wenzhang; He, Haizhou; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Jie; Liu, Yang; Li, Wenzhang; He, Haizhou; Chen, Qiyuan] Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.
通讯机构：
[Li, Wenzhang] C;[Li, Wenzhang] K;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Hunan, Peoples R China.
关键词：
WO3;nanoparticles film;electrochemical doping;photoelectrochemical performance
摘要：
We report the demonstration of electrochemical doping as a simple and effective strategy to induce in situ homo-species for improving the photoelectrochemical (PEC) performance of WO3 film by passivating the trap states. To observe the effect of applied potential on the photoelectrochemical performance of WO3 nanoparticles films, various applied potentials are employed for the electrochemical doping treatment. In comparison to pristine WO3 and the WO3 that have been annealed in Ar gas, the electrochemical doping WO3 shows remarkably improved photoelectrochemical performance. The optimized WO3 film yields a photocurrent density of 1.30 mA/cm(2) (vs. Ag/AgCl), which is 2.33 times higher than that of pristine WO3 film. The results of intensity-modulated photocurrent spectroscopy (IMPS) and electrochemical impedance spectra (EIS) demonstrate that the electrochemcial doping accelerates the electron transport with trap-state passivation so as to improve the separation of photo generated electrons and holes. This approach brings new opportunities for the development of PEC water splitting with superior performance. (C) 2016 Elsevier Ltd. All rights reserved.
语种：
英文
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Assessment of Pb and Cd in seed oils and meals and methodology of their extraction
作者：
Yang, Yang;Li, Hongliang;Peng, Liang* ;Chen, Zhipeng;Zeng, Qingru
期刊：
Food Chemistry ,2016年197(Pt A):482-488 ISSN：0308-8146
通讯作者：
Peng, Liang
作者机构：
[Zeng, Qingru; Yang, Yang] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.;[Peng, Liang; Zeng, Qingru; Li, Hongliang; Chen, Zhipeng] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Peng, Liang] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Detoxification;Extracting;Heavy metal;Seed meals;Seed oil extraction
摘要：
Oil seed, which is a secondary product in phytoremediation, contaminated with heavy metals should be disposed of in an appropriate fashion. In this study, heavy metal concentrations found in oilseed rape and peanut oils were below 0.1 mg kg-1 after extractions, being found most of the heavy metals in meals rather in oils. Extraction experiments were carried out to determine the optimum methodology for the removal of Pb and Cd from seed meals using K3C6H5O7, K2C4H4O6 and (NH4)2EDTA. The highest extraction of the Pb and Cd in the seed meals was achieved using 30 mM extractant solutions at 30 °C for 24 h and a three-step extraction procedure. K3C6H5O7 and K2C4H4O6 had less impact on the removal of nutrients than (NH4)2EDTA. © 2015 Published by Elsevier Ltd.
语种：
英文
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In situ synthesis of CdS/CdWO4/WO3 heterojunction films with enhanced photoelectrochemical properties
作者：
Zhan, Faqi;Li, Jie* ;Li, Wenzhang* ;Yang, Yahui;Liu, Wenhua;...
期刊：
Journal of Power Sources ,2016年325(Sep.1):591-597 ISSN：0378-7753
通讯作者：
Li, Jie;Li, Wenzhang
作者机构：
[Zhan, Faqi; Li, Jie; Li, Wenzhang; Liu, Wenhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.;[Zhan, Faqi; Li, Jie; Li, Wenzhang; Liu, Wenhua] Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.
通讯机构：
[Li, J; Li, WZ] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
关键词：
Tungsten oxide plates;CdS hollow sphere;In situ conversion;Photoelectrochemical activity
摘要：
CdS/CdWO4/WO3 heterojunction films on fluorine-doped tin oxide (FTO) substrates are for the first time prepared as an efficient photoanode for photoelectrochemical (PEC) hydrogen generation by an in situ conversion process. The samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet visible spectrometry (UV-vis) and X-ray photoelectron spectroscopy (XPS). The CdS hollow spheres (similar to 80 nm) sensitized WO3 plate film with a CdWO4 buffer-layer exhibits increased visible light absorption and a significantly improved photoelectrochemical performance. The photocurrent density at 0 V (vs. Ag/AgCl) of the CdS/CdWO4/WO3 anode is similar to 3 times higher than that of the CdWO4/WO3 anode, and similar to 9 times higher than that of pure WO3 under illumination. The highest incident-photon-to-current-efficiency (IPCE) value increased from 16% to 63% when the ternary heterojunction was formed. This study demonstrates that the synthesis of ternary composite photocatalysts by the in situ conversion process may be a promising approach to achieve high photoelectric conversion efficiency. (C) 2016 Elsevier B.V. All rights reserved.
语种：
英文
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High efficient removal of tetracycline from solution by degradation and flocculation with nanoscale zerovalent iron
作者：
Fu, Yuncong;Peng, Liang* ;Zeng, Qingru;Yang, Yang;Song, Huijuan;...
期刊：
Chemical Engineering Journal ,2015年270:631-640 ISSN：1385-8947
通讯作者：
Peng, Liang
作者机构：
[Fu, Yuncong; Peng, Liang; Song, Huijuan; Shao, Jihai; Zeng, Qingru; Gu, Jidong; Liu, Shiyu; Yang, Yang] Hunan Agr Univ, Dept Environm Sci & Engn, Changsha 410128, Hunan, Peoples R China.;[Peng, Liang] Cent S Univ, Sch Met Sci & Technol, Changsha 410083, Hunan, Peoples R China.;[Peng, Liang] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Peng, Liang] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Complex;Flocculation;Iron;Tetracycline
摘要：
The removal of tetracycline (TC) with nanoscale zerovalent iron modified by starch (starch-NZVI) was investigated using batch experiments as a function of reactant concentration, pH, time, competitive anions and ionic strength. The removal efficiency of 99% was obtained, 30% which was contributed from the adsorption and degradation and 69% which was attributed to flocculation when 500. mg/L TC was processed with 0.20. g/L starch-NZVI. The TC removal capacity of starch-NZVI increases with increasing the TC concentration. Furthermore, the flocculation kinetics was strongly dependent on pH and ionic strength. Neutral environment and high ionic strength can improve efficiently the sedimentation rate. The XPS analysis of flocculation showed that the Fe consisted of mainly Fe(III) and some Fe(II). LC-MS analysis revealed that the organic components included TC and the degradation products which resulted from the oxidization effect for TC. Our results firstly demonstrated that the combination degradation with flocculation is an efficient method on TC removal from solution with NZVI. © 2015 Elsevier B.V.
语种：
英文
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包膜肥用量对早熟油菜籽粒产量与油分产量的影响
作者：
田昌;谭太龙;杨勇;宋海星;刘强;...
期刊：
中国土壤与肥料 ,2015年(1):68-72 ISSN：1673-6257
作者机构：
[田昌; 杨勇; 宋海星; 刘强; 彭建伟; 荣湘民] 湖南农业大学资源环境学院;[谭太龙; 官春云] 国家油料改良中心湖南分中心
关键词：
早熟油菜;包膜肥;籽粒产量;油分产量
摘要：
采用大田小区试验,对比研究了不同用量包膜肥与普通肥对早熟油菜籽粒产量和油分产量的影响。结果表明:包膜肥处理的籽粒产量均高于相同用量的普通肥处理,包膜肥处理中B2(包膜肥用量为1 500 kg/hm~2)产量最高,为2 066.9 kg/hm~2, 普通肥处理中A2(普通肥用量为1 500 kg/hm~2)产量最高,为1 839.4 kg/hm~2, B2较A2处理的产量提高12.37%;油分产量变化规律与籽粒产量一致,处理B2最高,为874.5 kg/hm~2, 比处理A2(油分产量为792.8 kg/hm~2)提高10.30%,且包膜肥对油分产量的提高效率随着包膜肥用量的增加而降低。株高、分枝数、单株有效角果与产量呈极显著或显著正相关,对产量贡献最大;包膜肥处理产量的稳定系数较普通肥处理小。综合油菜籽粒产量、油分产量及籽粒产量与农艺性状的相关分析,在本试验所设处理中包膜肥用量为1 500 kg/hm~2的B2处理较好,且株高、分枝数和单株有效角果数对产量贡献最大。
语种：
中文
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Enhanced photoelectrochemical performance ofWO3 film with HfO2 passivation layer
作者：
Liu, Yang;Li, Jie;Li, Wenzhang* ;Liu, Qiong;Yang, Yahui;...
期刊：
International Journal of Hydrogen Energy ,2015年40(29):8856-8863 ISSN：0360-3199
通讯作者：
Li, Wenzhang
作者机构：
[Li, Jie; Liu, Qiong; Liu, Yang; Li, Wenzhang; Chen, Qiyuan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, London WC1H 0AJ, England.
通讯机构：
[Li, Wenzhang] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
HfO2;Passivation layer;Photoelectrochemical performance;WO3
摘要：
In this article, Hafnium oxide (HfO2) overlayer was reported to be loaded on the surface of WO3 nanoparticles by a simple solvothermal method for the first time. HfO2 powders were dissolved in the concentrated sulfuric acid as raw material. The physicochemical properties of WO3 nanoparticles with and without HfO2 passivation layer were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). For the film electrode prepared with doctor-blade method, scanning electron microscopy (SEM) and UV–vis absorbance spectroscopy (UV–vis) were used to determine the morphological and optical properties. Meantime, the photoelectrochemical properties of two samples were evaluated by means of liner sweep voltammogram, electrochemical impedance spectroscopy (EIS), intensity modulated photocurrent spectrum (IMPS) and incident photon to current conversion efficiency (IPCE). The WO3 film with HfO2 passivation layer showed better photoelectrochemical performance which could be ascribed to the inhibition of the recombination of electron-holes.
语种：
英文
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