水氮互作对春小麦不同生育期植株性状及产量的影响

Effects of Water and Nitrogen Interaction on Plant Character and Yield at Different Growth Stages of Spring Wheat

采用盆栽的方式研究了水氮互作对春小麦不同生育期植株性状及产量的影响。结果表明,在正常供水和中度干旱条件下,小麦拔节期的株高以中氮处理最高,其它性状均以高氮处理最高。在3个试验水分条件下,千粒重、穗粒数和平均每盆穗粒重均以高氮处理的最大;在供试的3个氮素水平下,千粒重和每盆穗粒重均以中度干旱处理最高。随着水分胁迫的加重,小麦株高、干物质重量、穗粒数降低。

The pot method was used to study the effect of water and nitrogen interaction on plant character and yield on spring wheat. The results showed that under the conditions of normal water and moderate drought, wheat height was highest in the middle nitrogen treatment during jointing stage, the others were the highest in high nitrogen treatment, as well as 1 O00-grain weight, grain number per spike and grain weight per spike under three water conditions. Under the condition of three nitrogen level, both 1 O00-grain weight and spike grain weight per pot of wheat were highest under middle drought treatment. As the water stress aggravated, the plant height, dry biomass and the number of grain per spike in wheat reduction.