期刊论文

中文

西北农林科技大学学报(自然科学版)

1671-9387

2013

41

10

105-111

10.13207/j.cnki.jnwafu.2013.10.021

05-02:国家烟草局和湖南省烟草局资助项目 2011004:安徽农业大学农学院科研启动基金

本校为其他机构

[目的]研究不同施硫量对烤烟农艺性状和光合特性的影响,以探明烤烟对硫的光合响应机制。[方法]以烤烟K326为供试材料,采用大田试验,施硫量分别为0,50,100,150和200 kg/hm~2,于烤烟移栽后不同时间测定烤烟农艺性状、叶绿素含量和光合参数。[结果]不同硫肥水平对烤烟的株高、茎围影响不大。在植烟土壤有效硫含量为20.07 mg/kg时,不施硫肥使烤烟叶片的最大叶面积和叶绿素含量显著降低,从而导致净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、叶面蒸汽压力亏缺(VPD)显著降低,气孔限制值(Ls)、瞬时水分利用率(WUE)和潜在水分利用率(WUEi)明显升高。但过量施硫(200 kg/hm~2)也会使烤烟的最大叶面积、节...

【Objective】The experiment was carried out to study the effect of different sulfur fertilization levels on agronomic traits and photosynthetic characteristics of flue-cured tobacco.【Method】The field experiment was carried out using K326 as experiment material.The tested sulfur fertilization dosages were 0,50,100,150,and 200 kg/hm2.【Result】The sulfur fertilization levels had no significantly influence on plant height and stem girth.The greatest leaf area and the chlorophyll content of flue-cured tobacco were significantly reduced in the 0 k...