山西地膜棉花高产优质综合农艺措施数学模型的研究

Study on mathematical Models of Synthetical Agronmic Measure for High Yield and Good Quality of Cotton in Sbanxi Province

本文采用五因素五水平二次回归旋转设计的方法，研究了山西不同生态棉区皮棉产量与密度、氮、磷、钾施肥量及化控次数（用量）关系的数学模型。分析了不同因素的影响效应，明确了各栽培措施的主次。通过模拟进优待选了不同产量等级的优化农艺措施组合方案，为不同生态棉区制定棉花高产优质决策方案提供依据。

The mathematical models for the relationsnip oetween lint yield and five agro-nomic factors such as planting density,N,P,K and DPC application were studied byadopting the method of five factors of twice regressive revolving design. The effectivenessof each factor was analysed.The agronomic measures according to priority were under-stood.The optimum combinations of agronomic measures for different yield grades wereselected.It can be used as an important basis for decision making for the high yield andgood quality of cotton production in the different region in Shanxi province.