一、增产效果“一膜两用”就是当年用地膜覆盖棉茬晚播小麦,来年再覆盖麦垄中套种的棉花。据1984年三个点次的试验,地膜覆盖的小麦,平均亩产477斤,比未覆盖的亩增产105.8～251.8斤。分别增产79.4%、43.6% First, the effect of increasing production “A dual-use film” is the year when the film covered cotton stubble late wheat, the next year and then covered wheat ears interplanting cotton. According to the three-point test conducted in 1984, the wheat covered with plastic film had an average yield of 477 kg per mu, an increase of 105.8 to 251.8 kg over the uncovered mu. Respectively, an increase of 79.4%, 43.6%