孙长法++陈荣江++田土星

摘要 利用通径分析、回归分析等方法对棉乡368品种在2006—2007年河南省短季棉区试及2009年生产试验中所得数据资料进行统计分析，结果表明：密度、株铃、铃重的最终效应均极显著，其中密度为负效应，而衣分、子指的效应不显著。实现高产，应在合理密植的基础上，力争株铃、确保铃重为主攻方向。各品质因素性状对纺纱指数的通径分析结果表明：最终效应（绝对值）依次为：关键词 棉乡368；产量性状；品质性状；高产结构指标；回归分析

中图分类号 S562 文献标识码 A 文章编号 1007-5739（2014）13-0009-03

Study on the Correlation Analysis of Yield Factors Traits and High Yield Structure Index for Cotton Mianxiang 368

SUN Chang-fa 1 CHEN Rong-jiang 2 TIAN Tu-xing 1

（1 Xinxiang Jinke Cotton Research Institute in Henan Province，Xinxiang Henan 453731； 2 Henan Institute of Science and Technology）

Abstract Using path analysis，regression analysis and other methods，the statistic data of Mianxiang 368 cotton variety in short season cotton regional trial in 2006—2007 and production trial in 2009 were analyzed.The results showed that，the ultimate effects of density，boll，boll weight were significant，the effect of density was negative，and that of lint percentage and seed index was not significant. The variety with high yield should be based on reasonable close planting，and strive to ensure that the boll weight was the main direction. Path analysis results of each quality trait to spinning index showed that，the ultimate effect（absolute value）were as follows，the strength>2.5% span length>uniformity>elongation（negative）>micronaire value（negative）. So long，the length，fineness，strength and uniformity of fiber quality were very important to improve the spinning index. Simulation high yield structural index parameters were as follows，density 51.70 thousand～53.04 thousand plants/hm2，per plant bells 9.24 ～9.65，per bell weight 5.16～5.31 g，lint percentage 39.27%～39.71%，expected output 1 437.33～1 461.38 kg/hm2.

Key words Mianxiang 368；yield traits；quality traits；high-yield structure index；egression analysis

根据前人对各类作物不同品种的高产结构的研究报道[1-7]及对作物高产优质的成因探讨[8-11]，利用早熟优质多抗棉花新品种棉乡368的2006—2007年区试及2009年生产试验数据进行统计建模与分析，探讨该品种性状相关及高产结构指标。

1 材料与方法

1.1 试验概况

皮棉产量是靠群体来实现的，高产优质栽培既要保证个体发育良好，又需形成良好的群体结构。要实现该品种的优化群体结构，需要注意：①合理密植，既考虑充分利用地力有益于皮棉增产，又要防止密度过高导致叶面系数过大，造成棉田闭荫，通风透光差，易导致病害加剧。②施足底肥，增施有机肥，稳施蕾肥，重施花铃肥，补施盖顶肥。③适量化控，遵循“前轻、中适、后重、少量多次”的原则，看苗促控，因苗管理，促控兼顾，防止早衰，使群体通风透光。优化成铃时期及部位，提高成铃率，力争早秋桃，以实现理想的产量结构。适时采摘，确保纤维品质。

4 参考……