冈杂棉8号产量构成因子分析及高产栽培主攻方向

Analysis on Yield Contributing Factors and the Main Direction of High Yield Cultivation of Gangzamian 8

对2006～2007年湖北省棉花品种区域试验、冈杂棉8号高产栽培试验及棉花高产创建示范户的有关冈杂棉8号调查的数据资料进行偏相关分析、多元回归分析和通径分析。结果表明,冈杂棉8号皮棉产量(以下简称产量)构成四因子与产量间有着极显著的正相关关系,产量构成四因子对产量贡献为单株铃数>密度>衣分>单铃重。因此,冈杂棉8号的高产栽培关键是在合理密植的基础上,以力争较多的单株铃数为主攻方向。

The data about regional test of cotton cultivar in Hubei in 2006～2007,high yield cultivation test of Gangzamian 8,documents from demonstration household for high yield production of Gangzamian 8 was analyzed by partial correlation analysis,multiple regression analysis and pathway analysis.The results showed that the 4 yield contributing factors of Gangzamian 8 were very significantly positive correlated with yield;and the contribution of the 4 factors lay in the following order,boll number per plantdensitylint percentweight per boll.Thus the key of Gangzamian 8 high yield cultivation was obtaining more boll per plant based on proper density.