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庄浪县农技部门为了延长地膜的使用年限,降低粮食生产成本,经过6年的试验示范研究,创造出地膜玉米田一年覆膜、二年利用的栽培方法(简称地膜重复利用免耕法)。1994年全县19个乡(镇)示范推广1.2万亩,占地膜玉米的30％,平均亩产达到392公斤,虽较新覆地膜玉米427.3公斤减少35.3公斤,但较露地玉米亩增146.5公斤,增产59.7％。亩投入较新覆地膜玉米减少50多元。该技术以地膜“一用田”精耕细作为基础条件,采用护膜、施肥、免耕等技术措施,充分利用地膜保墒增温效应,降低生产成本,具有显著的增产增收效益。当前在全省
Zhuanglang County Agricultural Technology Department in order to extend the useful life of the ground film to reduce food production costs, after six years of pilot demonstration studies, to create a film mulching film a year, two years of cultivation methods (referred to as plastic film reuse tillage ). In 1994, 19 townships (towns) of the county demonstrated and promoted 12,000 mu, accounting for 30% of the mulched corn, with an average yield of 392 kilos per mu. Although it was 35.3 kilograms less than the 427.3 kilograms of newly mulched corn, it was 146.5 kilos more than that of the mulch , An increase of 59.7%. Mu invest more new film mulching more than 50 yuan. The technology of “a field with plastic film” as the basic conditions of intensive cultivation, the use of protective film, fertilization, no-tillage and other technical measures to make full use of the plastic film moisturizing warming effect, reduce production costs, with significant benefits of increasing yield and income. Currently in the province