棉花单一群体创“150”产量构成及其贡献率分析  

Analysis of Lint Yield Components and the Contribution in Creating High Yield in Cotton

作　　者：陈兵林[1] 金桂红[1] 高璆[1] 汤一卒[1] 张培通[1,2] 王永乐[1,2] 王建棠 顾兴门 任学刚[1,2] 孙财[1,3] 蔡良让 成善洪 徐永东[1,3] 陈洪强[1,4] 蒋洪[1,4] 杨天和[1,4] 顾俊[1,4] 

机构地区：[1]南京农业大学农学系 [2]江苏省灌云县棉花办公室 [3]江苏金田集团棉花良繁中心 [4]江苏省科学技术委员会

出　　处：《棉花学报》1998年第5期268-272,共5页Cotton Science

基　　金：国家科委"九五"攻关项目;江苏省科委"九五"攻关

摘　　要：单位面积铃数、单铃重和衣分是构成棉花产量的三个重要因素。单位面积铃数对创“１５０”（公顷２２５０ｋｇ，后同）产量的贡献率最大，单铃重和衣分次之。偏相关分析表明，单位面积铃数与单铃重和衣分呈极显著的负相关。增加单位面积铃数与提高单铃重和衣分是创“１５０”高产的不同主攻方向。主攻单位面积铃数时，实收密度不得低于４．６５万株·ｈｍ－２。选用高铃重高衣分优良品种，创高产的风险性较小。创高产群体要求生物学产量稳定在１５ｔ·ｈｍ－２以上，子棉经济系数稳定在０．３８３以上。Lint yield was composed of three important factors of (a) total bolls, (b) boll weight and (c) lint percent. The percentage of contributions of (a) to lint yield took first place, (b) and (c) took second. The analysis of partial correlation showed that there were two positive correlations between (a) and (b) and (c). Adding (a) and improving (b) and (c) were two major directions of creating high yield of 2250kg·hm -2 . Adding (a), the density of harvest was no less than 4.65×10 4 plants·hm -2 . Using improved varieties/lines with higher (b) and (c), the risk of creating 2250kg·hm -2 lint yield was little. Biological yield of creating 3250kg·hm -2 lint yield could be steadily above 15t·hm -2 and the economic coefficient of seed cotton could be above 0.383.

关 键 词：棉花 产量构成 灌云县 

分 类 号：S562.01[农业科学—作物学]