本研究运用二次通用旋转组合设计方法,在影响棉花产量的诸因素中,选择密度(x_1)、施氮(N)量(x_2)、施磷(P_2O_5)量(x_3)和施钾(KCl)量(x_4)四项栽培措施做为决策变量,以皮棉产量、耔棉产量、净产值等七项性状指标为目标函数,建立四元二次回归数学模型。在此基础上经电子计算机模拟、筛选、提出该地区影响棉花产量的主要因素为施磷量和密度,其次是施钾量和施氮量。同时明确了最高产量及不同产量水平的最佳农艺措施配套方案。 In this study, quadratic universal rotation combination design method was used to select the factors affecting the yield of cotton, such as density (x_1), nitrogen (x_2), phosphorus (P_2O_5) content (x_3) ) Quantity (x_4) as the decision variables, the quaternary quadratic regression mathematical model was established based on the seven trait indexes of lint yield, cotton yield and net production value. Based on this, the main factors affecting the cotton yield in this area were phosphorus application and density, followed by potassium application and nitrogen application through computer simulation and screening. At the same time, the best agronomy measures package with the highest yield and different yield levels were defined.