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采用二次正交旋转组合设计，对安徽沿江棉区棉花的移栽密度、施氮量、施磷钾肥量、去除早蕾数及喷缩节胺量与棉花烂铃的关系，进行了定性定量的研究。建立了棉花烂铃率和烂铃指数对五项栽培因子反应的数学模型，并对模型进行检验和解析。结果表明：模型极显著，与实际相吻合，五项栽培因子对棉花烂铃存在显著或极显著的影响；同时因子间存在着互作效应。此模型可作为近似气候年份棉花烂铃的预测模式。
The quadratic orthogonal rotation combination design was used to qualitatively and quantitatively determine cotton transplanting density, nitrogen application rate, phosphorus and potassium fertilizers, the number of early buds to be removed, and the amount of sparging adventitious buds and cotton bolls in cotton fields along the Yangtze River in Anhui Province. Research. The mathematic model of cotton rotten boll rate and rotten boll index on five cultivation factors was established, and the model was tested and analyzed. The results showed that the model was extremely significant and consistent with the actual situation. The five cultivation factors had a significant or extremely significant effect on the boll bolls of cotton. At the same time, there existed an interaction effect between the factors. This model can be used as a prediction model for the cotton boll in the climatic year.