In contrast, the imperforate film mulching method is a way to cover the topsoil with the film fixed by compacted soil on its ends when the crop is planted beside the film. 地膜覆盖无孔种植法,用地膜平铺于表土,边沿用土压紧封闭,将庄稼种在地膜旁边,膜下土壤中的水分和热量不易散失,却容易吸收外界水分,因此,庄稼增产不比传统覆盖法少。