不同水氮处理对冬小麦生长及产量的影响
Effects of Different Water and Nitrogen Treatments on Growth and Yield of Winter Wheat
薛志伟 1杨春玲 1郭海斌 2李小艳 3王志祥4
作者信息
- 1. 河南省安阳市农业科学院,河南安阳455000
- 2. 河南省驻马店市农业科学院,河南驻马店463000
- 3. 河南省洛阳市农业科学院,河南洛阳417000
- 4. 山东登海先锋种业有限公司,山东莱州261400
- 折叠
摘要
[目的]研究不同的水氮处理对冬小麦生长和产量构成的影响.[方法]以“周麦18”为材料,采用裂区试验设计,主因素为3种水分处理,副因素设置为3种氮肥水平,开展大田试验.[结果]拔节期作为冬小麦对水肥效应的关键期,适量追施氮肥可以提高冬小麦的株高、单株分蘖数和叶面积指数,并可显著提高冬小麦地上部干物质量,从而改善冬小麦的群体结构.冬小麦在水氮互作下,其株高和地上部干物质量均随着生育进程的推进逐渐增加;叶面积指数呈现先增加后减少的抛物线状变化.以灌溉3水(返青水、拔节水和开花水)同时施用氮肥270 kg/hm2(拔节期追肥)的处理产量最高.[结论]该研究可为豫北地区冬小麦生产提供科学的理论指导.
Abstract
[Objective] The aim was to study effects of different irrigation times and nitrogen fertilizer on the growth and yield of winter wheat.[Method] With Zhoumai 18 as material,plants were subjected to a split plot design,with three irrigation times being in the main plot,three nitrogen levels being in the split-plot.[Result] The jointing stage was the key of winter wheat response to water and nitrogen coordination,topdressing nitrogen reasonable could improve winter wheat plant height,tillering number per plant and leaf area index,and improve dry matter in the above ground parts of winter wheat significantly,thereby improving population structure of winter wheat.Under the interactions of water management and nitrogen fertilizer,plant height and dry matter in the above ground parts of winter wheat increased gradually with the growing procession.The leaf area index increased first and then decreased.Under irrigation water (revival water,irrigation at jointing stage and flowering water) and nitrogen fertilizer 270 kg/hm2(topdressing at jointing stage),yield of winter wheat was the highest.[Conclusion] The study can provide scientific guidance for winter wheat production in northern Henan Province.
关键词
冬小麦/水分/氮素/作物生长/产量Key words
Winter wheat/Moisture/Nitrogen fertilizer/Crop growth/Yield引用本文复制引用
基金项目
农业部国家现代农业产业技术体系资金资助项目(CARS-3)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据