干旱胁迫对冬小麦氮素营养效率的影响  

Effect of Drought Stress on Nitrogen Nutrition Efficiency of Winter Wheat

作　　者：唐玉霞[1] 孟春香[1] 贾树龙[1] 林保民 

机构地区：[1]河北省农林科学院土壤肥料研究所,石家庄050051 [2]河北省秦皇岛市土肥站,秦皇岛066000

出　　处：《河北农业科学》2000年第2期10-13,共4页Journal of Hebei Agricultural Sciences

摘　　要：用称重控水的方法进行盆栽试验。研究结果表明:小麦生育期干旱胁迫影响其氮素的吸收、运转及产量,影响的程度依次为:拔节至抽穗期>抽穗至灌浆初期>灌浆初期至成熟期>返青至拔节期。拔节至抽穗期干旱胁迫极显著地降低冬小麦的氮素营养效率。The pot experiment was conducted by way of weighing to control water content in soil. The result showed that the effect of drought stress on yield, nitrogen absorption and nitrogen transport efficiency of winter wheat was obvious. The degree of effect was: jointing to heading stage > heading to early milking stage > early milking stage to harvesting > reviving to jointing stage. The drought stress from jointing to heading stage decreased nitrogen nutrition efficiency of winter wheat significantly.

关 键 词：冬小麦 干旱胁迫 氮素营养效率 

分 类 号：S512.101[农业科学—作物学]