氮素营养水平对冬小麦产量及生物学性状的影响  

Effects of nitrogen rates on grain yield and biological characteristics of winter wheat

作　　者：王志勇[1] 白由路[1] 王磊[1] 王贺[1] 程明芳[1] 

机构地区：[1]中国农业科学院农业资源与农业区划研究所,农业部作物营养与施肥重点开放实验室,北京100081

出　　处：《中国土壤与肥料》2011年第4期22-25,共4页Soil and Fertilizer Sciences in China

基　　金：国家“十一五”科技支撑计划“高效施肥关键技术研究与示范”(2008BADA4B03)

摘　　要：2007～2008年在河北廊坊中国农业科学院国家测土施肥中心实验室试验基地的低肥力砂质潮土上,进行氮素营养水平对冬小麦产量及生物学性状的影响研究。结果表明:在喷灌低肥力土壤条件下,小麦产量与氮素营养成二次曲线关系,在每公顷施氮量为239.63 kg时获得最高产量。在每公顷施氮量为60～300 kg范围内,氮素营养促进了冬小麦株高的增加,提高了冬小麦的分蘖数、叶面积指数和最终收获穗数。氮素营养水平与冬小麦分蘖数、叶面积指数和最终成穗数成正相关的线性关系。The effect of nitrogen rates on grain yield and biological of winter wheat were studied in Langfang experimental base of centre for laboratory soil testing of Academy of Agricultural Sciences of China from 2007 to 2008.Result indicated that a conic relationship was found between nitrogen rates and wheat yield under sprinkling irrigation low soil fertility condition.The highest grain yield was obtained when the nitrogen rate was 239.63 kg/hm2.Nitrogen application increased plant height,number of tiller,leaf area index and the final harvest spikes of winter within the nitrogen rates from 60 to 300 kg/hm2.

关 键 词：氮素营养 冬小麦 产量 生物学性状 

分 类 号：S512.11[农业科学—作物学]