氮磷配施对冬小麦伊农20号群体性状及产量的影响  

Effect of Application of Phosphorus Combined with Nitrogen Fertilizer on Population Traits and Grain Yield of Winter Wheat Cultivar "Yinong 20"

作　　者：王彩荣 孙娜 崔新菊 张新英 艾力 曹爱荣 

机构地区：[1]伊犁州农科所,新疆伊宁835000

出　　处：《作物杂志》2011年第4期74-77,共4页Crops

基　　金：国家科技支撑计划项目子专题(2007BAC15B03)

摘　　要：为给伊农20号大面积推广选择适宜的施肥水平。设置氮肥和磷肥各3个水平,研究了氮磷配施对该品种群体性状、产量及其构成因素的影响。结果表明:氮磷配施对伊农20号群体性状及产量有显著的调节作用,最高群体总茎数随氮磷肥的增加先增后降,不同氮磷处理对子粒产量及其构成因素的影响达极显著或显著水平,并且磷肥对产量构成因素的影响大于氮肥;根据本试验结果可以得出,在伊农20号维持最大叶面积指数8.4和干物质重17 252.6kg/hm2左右时,子粒产量可以突破8 000kg/hm2,相对应的适宜氮磷施用量分别为N300kg/hm2和P2O5150kg/hm2。In order to provide suitable fertilizer application for the large-scale extension of wheat cultivar ＂Yinong 20＂,effects of nitrogen and phosphorus on population traits,grain yield and yield components were investigated.The results indicated that the application of phosphorus combined with nitrogen fertilizer adjusted greatly population traits and grain yield.The highest stem number increased first and decreased afterwards with the increase of fertilizer application.The effect of nitrogen and phosphorus on grain yield and its components were significant.The influence of phosphorus on yield component was larger than that of nitrogen.When the highest leaf area index and dry biomass accumulation were around 8.4 and 17 252.6kg/hm2,respectively,grain yield of ＂Yinong 20＂ could reach up to 8 000kg/hm2,while the optimum combination of fertilizer application was 300kg/hm2 of N and 150kg/hm2 of P2O5.

关 键 词：冬小麦 氮磷配施 群体性状 子粒产量 

分 类 号：S512.11[农业科学—作物学]