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利用塑料薄膜覆盖地面(简称地膜覆盖)栽培农作物,是一项新兴的农业技术措施,具有促进农作物生长发育,提高产量的作用。目前,国内外在各种作物上都有不同程度的应用。由于地膜覆盖能显著减少地面水分蒸发,保持土壤墒情,节约大量灌溉用水,因此在水稻栽培上应用就具有更重要的意义,在国际上应用较为广泛,日本岩手、青森两县地膜覆盖旱稻面积曾占水稻总面积的65.7％,产量也达到水田稻作的水平。我国辽宁省,1981年进行了多点试验,其中有五分之一的点亩产在600—1000斤。由于地膜覆盖旱种水稻具有节约用水的突出特点,所以在干旱地区很有发展前途。
The use of plastic film covering the ground (referred to as plastic film mulching) cultivation of crops is an emerging agricultural technology measures, with the promotion of crop growth and development, increase production. At present, all kinds of crops both at home and abroad have different degrees of application. As the plastic film mulching can significantly reduce the evaporation of ground water, maintain the soil moisture and save a lot of irrigation water, it is more important to apply rice cultivation. It is widely used in the world. The area of mulching rice in Iwate, Accounting for 65.7% of the total area of rice, yield also reached the level of paddy rice. Liaoning Province of our country conducted a multi-point test in 1981, of which one-fifth of the points produced 600-1000 jin of mu. Since mulching dry-cultivated rice has the prominent characteristic of saving water, it has a promising future in arid areas.