地膜覆盖栽培技术在农业生产上广泛应用,在蔬菜、玉米生产上增产效果十分显著。为了摸索地膜覆盖对小麦的增产效果及一膜两用的经济效益,我所今年进行了冬小麦地膜覆盖及小麦揭膜后用旧膜再覆盖西瓜的栽培试验。一九八五年十二月八日小麦停止生长后,在我所示范田里用塑料薄膜覆盖“静宁 Plastic film mulching cultivation technology is widely used in agricultural production, the yield increase in vegetable and corn production is very significant. In order to explore the effects of plastic film mulching on the yield increase of wheat and the economic benefits of a dual-use film, this year we conducted the winter wheat mulching and the cultivation experiments after the wheat was mulched with the old film and then covered with watermelon. After the wheat stopped growing on December 8, 1985, a plastic film was used to cover the "Jingning