自地膜覆盖栽培技术在我省试验、示范和推广以来,仅三四年时间,覆膜面积已达100多万亩。这项技术应用范围之广、推广速度之快是很突出的。但是,必须注意到,地膜覆盖栽培投入的资金较多、技术性较强,如果搞不好,可能经济效益不大,甚至收不回投资成本。在生产上大面积推广应用地膜覆盖栽培技术, Since the film mulching cultivation technology in our province test, demonstration and promotion, only three or four years, the membrane area has reached more than 100 million mu. The wide range of applications of this technology, the promotion of fast is very prominent. However, it must be noted that mulching film mulching invests more funds and is more technical. If it is not done well, it may be economically inefficient and can not even recover the investment cost. In the production of large areas to promote the use of plastic film mulching cultivation techniques,