限水灌溉与施氮方式对小麦群体动态及产量的影响  

Effects of Limited Irrigation and Nitrogen Application on Population Development and Grain Yields of Wheat

作　　者：姚战军[1] 杨玉锋[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]安阳县第二高级中学,河南安阳455000 [4]河南农业大学国家小麦工程技术研究中心,河南郑州450002

出　　处：《河南农业科学》2011年第8期63-66,共4页Journal of Henan Agricultural Sciences

基　　金：国家重点基础研究发展规划"973"项目(G2000077900);河南省重大科技攻关项目(122012300)

摘　　要：在大田条件下,研究了限水灌溉与施氮方式对小麦群体动态及产量的影响。结果表明,不同灌水次数和施氮方式对小麦群体动态及产量均具有一定的调控效应,其中灌水次数的调控效应大于施氮方式,且两者间存在着明显的互作效应:穗数、穗粒数及产量均随灌水次数增加而增加,但千粒重以灌1水处理(47.5 g)最高。不同灌水条件下,施氮方式不同效果也不同:不灌水时,产量以N3(基施60%氮+拔节追40%氮)处理最高(5 025.1 kg/hm2);灌水条件下,产量以N4(基施60%氮+孕穗期追40%氮)处理最高(7 633.4 kg/hm2)。Population development and grain yields of wheat under limited irrigation and nitrogen application regimes were studied in field conditions.The results showed both irrigation times and nitrogen application regimes had some effects on the population development and yields of wheat.The effect of irrigation was much greater than nitrogen application,and interaction effects were found between them.Spike number,kernel number per spike and grain yields rose gradually with increase of irrigation times.The largest 1000-kernel weight was 47.5g under the treatment of one-irrigation.The effect of nitrogen application regimes on yields was different under different irrigation conditions.The highest yield of 5025.1kg/ha was obtained under the N3 treatment（60% of basic N fertilizer and the other 40% at jointing stage） without irrigation.The N4 treatment（60% of basic N fertilizer and the other 40% at booting stage） with irrigations gave highest yield of 7633.4kg/ha.

关 键 词：小麦 限水灌溉 施氮方式 群体动态 产量 

分 类 号：S512.1[农业科学—作物学]