我省棉区推广棉花地膜覆盖栽培技术,取得了比较明显的经济效益和社会效益。地膜覆盖后引起棉田环境的变化,使棉田有害生物结构发生了改变,其主要表现之一是地膜覆盖棉田较露地棉田苗期红蜘蛛发生早、数量多、为害重,这就使常规防治技术难以取得较好的控治效果。我所结合土壤施药技 Cotton area in our province to promote cotton mulching cultivation techniques, made more obvious economic and social benefits. After the mulching, the environmental changes in the cotton field caused the changes of the pest structure in the cotton field. One of the main manifestations was that mulching covered cotton fields earlier, more in number and heavier weight than the spider mites at the seedling stage in the mulched cotton fields, which made conventional control techniques difficult Get better control effect. I combined soil application technology