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采用相关、回归及通径分析研究了长江中下游棉花产量相关性状间的关系及其对产量的决定作用,并分析了棉太金对产量影响因子的调控效果。结果表明,长江中下游棉花产量的提高需要总铃数和铃重的协同增加,同时要适当缩短主茎节间和果枝长度,以塑造理想株型、构建合理冠层。棉太金能有效控制植株徒长,合理降低株高,缩短果枝长度,增结伏桃和早秋桃,在保证铃重和衣分的前提下,显著提高总铃数和产量。
Correlation, regression and path analysis were used to study the relationship between cotton yield-related traits and their determinants of yield in the middle and lower reaches of the Yangtze River. The effect of cotton-Median on yield control was also analyzed. The results showed that the increase of cotton yield in the middle and lower reaches of the Yangtze River required the synergetic increase of boll number and boll weight, meanwhile, the length of internodes and fruiting branches in main stems should be shortened appropriately to create the ideal plant type and establish a reasonable canopy. Cotton too can effectively control the growth of plants so as to reduce plant height, shorten the length of fruit branches, increase the number of nectarine and early autumn peach, under the premise of ensuring boll weight and lint percentage, significantly increase the number of bolls and yield.