sGK棉乡69产量构成因素分析与高产结构模型

运用偏相关与通径分析方法对2006-2007年河南省棉花品种区试及生产试验中sGK棉乡69品种的数据进行分析,结果表明,该品种应在合理密植的基础上,以力争单株多结铃、增总铃、稳铃重、保衣分为主攻方向。从产量结构模型模拟得出该品种皮棉产量在1050～1800kg/hm2间,产量构成因素为:密度34978～44049株/hm2,株铃数18.02～21.69个,铃重4.97～6.10g/个,衣分34.22%～46.35%。

The Analysis of Yield Components and Simulating High-yield Structure Indexes for New Cotton Variety sGK Mianxiang 69

Based on the data of Henan province cotton region test in the two years 2006,2007 and cotton production test in 2007,the methods of partial relation and path analysis were applied to analyze the lint yield of sGK mianxiang 69 and its structural elements.The results showed that this variety,for ensuring high yield cultivation under rational close planting,should strive for more bolls on each plant,increase total bolls and their weight,keep lint percentage.Different yield structure indexes corresponding to different lint yield was simulated to get from the model of yield structure,the simulation result showed that,in scope of 1050-1800kg/ha lint yield,the value of yield components should be as follows:density 34978-44049 plant/ha,per plant bolls 18.02-21.69,boll weight 4.97-6.10g and lint percentage 34.22%-46.35%,respectively.