摘要
在棉花高产试验条件下（皮棉２２５０ｋｇ·ｈｍ－２）研究了群体冠层及营养生理特性，阐明了棉花日生长量、叶面积动态、干物质积累、棉铃时空分布和矿质营养吸收规律。确定了棉花最高叶面系数３．５８，籽棉经济系数３７．２％～４１．３％。每１００ｋｇ皮棉吸收Ｎ１３．５２ｋｇ，Ｐ２Ｏ５３．６２ｋｇＫ２Ｏ２７．３ｋｇ。Ｎ∶Ｐ２Ｏ５∶Ｋ２Ｏ为１．０∶０．２７∶２．０。
This article has researched the community characteristics and nutrient physiology peculiarity in high yield plot of cotton(ginned cotton 2 250 kg/hm 2)and also,has illustrated the production every day and dynamic state of leaf area, occumulation of dry matter, distribution of cotton ball and law of nutrition. Maximum leaf area of 3.58,economic coefficient of unginned cotton of 37.2%-41.3%,rate of assimilation of N 13.52kg P 2O 5 3.62 kg K 2O 27.3 kg for 100 kg of ginned cotton and N∶P 2O 5∶K 2O 1∶0.27∶2 have been determined.
出处
《新疆农业大学学报》
CAS
1997年第1期12-14,33,共4页
Journal of Xinjiang Agricultural University
基金
国家"九五"科技攻关资助项目
关键词
棉花
营养生理
叶面积系数
干物质
冠层
群体
cotton
nutrient physiology
coefficient of leaf area
dry matter
plant cap
community
