地膜为何挂在了墙上到一位农民家里做客，看见墙上挂着一捆地膜。交谈中得知，这些地膜是上面硬性摊派下来的，由于本地土质不适合地膜覆盖，使用与不使用地膜效益相当，在这里推广地膜覆盖技术只是让农民花钱买个“忙活”，故他们只好将其束之高阁。实践证明，有些农业技... Why the film hung on the wall to a peasant family guest, saw the wall hung a bundle of plastic film. It was learned during the conversation that these mulch films were hard-pressed from the top. Since the native soil is not suitable for mulching and the benefits of mulching are the same as those of non-mulching film, popularizing mulching film here is only a matter of allowing farmers to spend money on busy shopping, Put it on top. Practice has proved that some agricultural technology ...