Effects of Water and Nitrogen Application on Photosynthetic Characteristics of Flag Leaves and Grain Yield of Wheat  

限水灌溉与施N时期对小麦旗叶光合作用及产量性状的影响(英文)

作　　者：姚战军[1] 李保利[2] 陈若英 郭天财[4] 

机构地区：[1]安阳工学院国际教育学院,河南安阳455000 [2]安阳工学院,河南安阳455000 [3]河南省安阳县第二高级中学,河南安阳455000 [4]国家小麦工程技术研究中心河南农业大学,河南郑州450002

出　　处：《Agricultural Science & Technology》2011年第2期258-261,共4页农业科学与技术（英文版）

基　　金：Supported by National Key Basic Research Program(NKBRP)(G2000077900);Key Scientific and Technological Project of Henan Province(122012300)~~

摘　　要：[Objective] The aim was to provide a scientific and rational water,nitrogen model for achieving high yield,high quality of wheat and water and fertilizer saving.[Method] Under the field conditions,the effects of irrigation frequencies and N application times on net photosynthetic rate（Pn）,chlorophyll fluorescence parameters of flag leaf and yield of wheat was studied.[Result] The differences on Pn,chlorophyll fluorescence parameters Fv/Fo,Fv/Fm,qP,qN of flag leaves and yield of wheat among different irrigation times had reached a significant level,and the difference between treatment without irrigation and irrigation treatments were relatively large;the difference on Pn,Fv/Fo,Fv/Fm,qP and qN between treatments of basal application of N fertilizer and N application（40%）in returning green stage was not significant,however,the photosynthetic parameters and yield of two treatments were obviously lower than that of N application（40%）in jointing stage or booting stage.[Conclusion] The effects of irrigation frequencies and N application times showed significant interaction effects on photosynthetic characteristics of wheat flag leaves and yield,in which W2N4 treatment combination was best.[目的]实现小麦优质高产节水省肥提供科学合理的水氮运筹模式。[方法]在大田条件下,研究灌水次数及施N时期对小麦旗叶Pn、叶绿素荧光参数及产量的影响。[结果]灌水次数对旗叶Pn、Fv/Fo、Fv/Fm、qP、qN及产量的影响均达到显著或极显著水平,且不灌水与灌水处理间差异较大;N肥全部基施与返青期追施(40%)处理间旗叶的Pn、Fv/Fo、Fv/Fm、qP和qN差异不大,但2个处理的光合参数与产量均明显低于拔节期或孕穗期追施(40%)处理。[结论]灌水次数与施N方式对Pn、叶绿素荧光参数及产量性状的调控存在显著的互作效应,其中以W2N4处理组合效果最好。

关 键 词：WHEAT Irrigation frequency N application time Photosynthetic traits Yield 

分 类 号：S512.1[农业科学—作物学]