江西农业学报Issue(9)：27-30,4.
不同种植密度对杂交抗虫棉生长发育及产量构成的影响
Effects of Planting Density on Growth, Development and Yield Components of Hybrid Insect-resistant Cotton
摘要
Abstract
The effects of different planting densities (18000~54000 plant/hm2) on the growth, development, yield, and yield components of hybrid insect -resistant cotton variety Zhongmiansuo 75 were studied through filed tests .The results indicated that:when plant density increased , the whole growth and developmental duration of cotton shortened , plant height decreased firstly and then slightly increased , dry matter weight per plant , total fruit-branch node number , and fruit-branch number per plant reduced , while total dry matter weight per unit area increased .As plant density rose , the boll formation concentrated towards the upper part and inner of cotton plants , the number of bolls per plant decreased significantly , the boll weight , total boll number per unit area and unginned cotton yield per unit area all increased firstly and then decreased , and the rate of pre-frost flowers showed a rising trend . The optimum planting density of Zhongmiansuo 75 in coastal area was 36000 plant/hm2 , and the highest unginned cotton yield 4292.0 kg/hm2 could be obtained under this condition .关键词
棉花/种植密度/生长发育/产量/产量构成因素Key words
Cotton/Planting density/Growth and development/Yield/Yield components分类
农业科技引用本文复制引用
王海洋,陈建平,蔡立旺,王为,王永慧,戚永奎,施庆华,潘宗瑾,高进..不同种植密度对杂交抗虫棉生长发育及产量构成的影响[J].江西农业学报,2014,(9):27-30,4.基金项目
转基因生物新品种培育重大专项（2012ZX08013007-003）；江苏省农业科技自主创新资金项目［CX（12）3068］；国家星火计划（2012GA690331）。 （）
