我省自1981年开始进行地膜覆盖植棉试验,开始试点仅4亩,1982年全省地膜棉试验示范面积为12554亩,1983年扩大到14.7万亩,普遍获得了显著的增产效果和经济效益。为了给大面积示范推广提供理论依据,特对二熟套种的地膜棉的生长发育特点及产量形成进行了研究。现将初步结果整理如下。 Since 1981, the province started cotton mulching test and started pilot project only 4 mu. In 1982, the demonstration area of ​​cotton mulching cotton in the province was 12,554 mu and it was expanded to 147,000 mu in 1983, and the yield and economic benefits were generally obtained . In order to provide a theoretical basis for large-scale demonstration and promotion, we studied the growth and development characteristics and yield formation of two-crop intercropping cotton. The preliminary results are now organized as follows.