期刊论文

Effects of controlled-release urea on nitrogen uptake characteristics and yield of double-cropping rice around Dongting Lake area

Wang, Y.-Z.

中文

作物学报

0496-3490

2021

47

04

691-700

10.3724/SP.J.1006.2021.02038

本研究由国家重点研发计划项目(2017YFD0200703), 国家自然科学基金区域创新发展联合基金项目(U19A2050), 湖南省自然科学基 金青年项目(2019JJ50233, 2019JJ50337)和湖南省教育厅重点项目(20A250)资助。 This study was supported by the National Key Research and Development Project of China (2017YFD0200703), the Joint Funds of the National Natural Science Foundation of China (U19A2050), the Hunan Natural Science Foundation Project (2019JJ50233, 2019JJ50337), and the Key Project of Hunan Provincial Education Department (20A250). * 通信作者(Corresponding author): 王英姿, E-mail: 83075688@qq.com 第一作者联系方式: E-mail: chtian12@126.com Received (收稿日期): 2020-05-24; Accepted (接受日期): 2020-09-13; Published online (网络出版日期): 2020-10-05. URL: https://kns.cnki.net/kcms/detail/11.1809.S.20200930.1634.008.html

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缓控释肥料应用于我国水稻生产中,对化肥使用量零增长和农业可持续发展具有重要推动作用。本研究以连续在湖南进行6年（2013—2018年）的双季稻控释尿素施用试验为研究平台,分析控释尿素施用下环洞庭湖区早晚稻主要生育期地上部氮素累积、氮素阶段吸收速率与氮素利用的关系,探究控释尿素减施对水稻持续稳产增产的原因。结果表明:早稻各施氮处理均有1次明显的氮素阶段吸收速率峰值,控释尿素（controlled-release urea, CRU）处理氮素吸收相对延后,氮素累积主要在幼穗分化始期至抽穗期阶段,占生育期总量的35.31%～42.33%,其次为始分蘖期至幼穗分化始期和抽穗期至乳熟期。晚稻于始分蘖期至幼穗分化...

The application of slow- and controlled-release fertilizer in rice production plays an important role in promoting the zero growth of fertilizer use and the sustainable development of agriculture in China. In this study, six consecutive years from 2013 to 2018 of controlled-release urea application in double-cropping rice in Hunan province were used to analyze the relationship between N uptake rate and N utilization in the above part of early- and late- rice in the main growth period by controlled-release urea application around the Dongting La...