栽培因子对棉花烂铃影响的数学模型研究

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。

Study on the Mathematical Models of cultural factors affecting cotton boil rot

Adopting five factors in quadratic regressive revolving design, We studied the relationship between cotton boil rot and density, side-dressing N, P2O5.K2O,E. S. S. R,spraying Dpc in the cotton region along the Yangtze River in Anhui province. The models of five cultural factors' effect on the percentage and the index of cotton boil rot were established. The results showed that the models are extremely remarkable and coincident with practice,And five cultural factors have great effect on cotton boil rot and there are interactions among them. This models may be used as forecast pattern under the similar climates.