地膜棉田因收获后来不及清除地膜,绝大部分棉田将膜翻入地中,造成土地污染,发展下去,后果极为严重。同时膜维持到最后,也给中、后期田管带来困难。能不能中期将地膜揭掉,既可解决地膜污染问题,又便于棉田中、后期水肥管理。问题的关键是揭膜后会不会造成减产,这是人们普遍关心的问题。为此,我站进行分期揭膜试验,现将结果分述如下: Film mulch because after harvest less than clear the plastic film, the vast majority of cotton fields into the film, resulting in land pollution, the development continues, the consequences are extremely serious. At the same time maintain the film to the end, but also to the late field tube difficulties. Can not be removed in the middle of the film can not only solve the problem of plastic film pollution, but also facilitate the cotton field, the late fertilizer and water management. The crux of the issue is whether the loss of production will be caused after uncovering the film, which is a common concern. For this reason, I am going to carry out staged uncovering experiments, and I will now summarize the results as follows: