干旱地区农业研究2011，Vol.29Issue(2)：40-44,82,6.
南疆地区不同施氮量棉花叶片光合特性及产量表现
Photosynthetic characteristics and yield of cotton under different nitrogen application rate in Southen Xinjiang
摘要
Abstract
Based on an nitrogen experiment under ecological condition in Southen Xinjiang, the effect of nitrogen fertilizer on photosynthentic characteristics and yield of cotton were investigated. The result showed that topdressing nitrogen rate could improve photosynthetic characteristics and the chlorophyll content of cotton, delay senescence of leaves and raise net photosynthesis rate; cotton leaves area and LAI were enhanced with reasonable N application, and LAI decreased rapidly in later stages with excessive N rate. Shedding rate of cotton stem leaf declined when N rate was 258.75 kg/hm2.Cotton yield increased when N rate applied was among 0 ～ 258.75 kg/hm2, and decreased until N rate applied exceed 258.75 kg/hm2.关键词
棉花/施氮量/光合特性/产量Key words
cotton/ nitrogen application rate/ photosynthetic characteristic/ yield分类
农业科技引用本文复制引用
罗新宁,陈冰,张巨松,蒋平安..南疆地区不同施氮量棉花叶片光合特性及产量表现[J].干旱地区农业研究,2011,29(2):40-44,82,6.基金项目
国家"十一五"科技支撑计划项目棉花高产优质高效栽培技术研究(2006BAD21B02-1) （2006BAD21B02-1）
新疆"十一五"重大专项(200731133-1) （200731133-1）
新疆维吾尔自治区土壤学重点学科基金项目 （）
