棉花品种的群体株高对种子产量影响的研究

品种与密度互作产量之间有显著差异,最能反映品种特征特性的是株型,反映株型的最好指标是株高。在一定生产水平和群体容量范围内,株高与密度呈明显的反相关。品种的群体株高不仅表现直观平面的量化指标(cm),同时可透视动态的立体内涵指标——果枝果节,两者对棉种产量的合理建成具有重要的影响。该文从950块3730公顷棉种繁殖田中随机任择100块,调查群体株高交叉配合的效应,探讨不同群体株高的配合适度及其最佳运筹点,以聚类和回归分析的方法加以验证。研究结果对大面积棉种高产、稳产、优质、高效繁殖具有切实可行的参考价值。

A Study on Effect of Cotton Varietal Mass plant Height in cottonseed Yield

Significant difference in seed yield may be detected due to the interation between vairety and planting density. Plant type may be the best reflection of charecteristics of vaireties, while plant height is the best reflection of plant types. On'certain production level and within the range of mass capacity plant height keeps significant negative correlation with plonting density. Varietal mass height may reflect quantitative indexes both internally and externally, both of which exert important effects on the rational fomaticn of cotton seed yields. 1 00 patches of cotton fields were selected at random from 950 patches on area of 3730 hectares. The effect of cross-coodination among mass plant height and the optimum operationol dot were investigated . The results were checked by polysynthesis analysis and regression analysis. These results may be used as reference in the production of cotton seeds.