全膜双垄沟播栽培对土壤含水量·温度及玉米产量的影响

Effects of Full Film Mulching Double Ridge Sowing Cultivation on Soil Moisture,Temperature and Maize Yield

[目的]研究全膜双垄沟播栽培技术对玉米的增产机理。[方法]试验设在甘肃省环县许旗村,供试品种为承单20号,共设5个处理,即全膜双垄沟播、全膜覆盖平铺穴播、半膜覆盖平铺穴播、常规半膜种植起垄覆膜、露地平播,研究5个处理对土壤含水量、土壤温度及玉米产量的影响。[结果]全膜双垄沟播栽培处理的玉米不同生育期的土壤含水量和土壤温度均高于全膜覆盖平铺穴播、半膜覆盖平铺穴播、常规半膜种植起垄覆膜和露地栽培处理,经济产量分别增产4.4%、22.4%、27.5%、46.3%,生物产量分别增产4.1%、22.0%、27.1%、46.7%。[结论]全膜双垄沟播栽培增产效果明显,应在我国旱作农业区粮食生产中大力推广应用。

[ Objective ] The aim was to further study effects of full film mulching double ridge sowing cultivation on yield increasing of maize. [ Method ] The experiments were conducted in Xuqi Village, Huanxian County, Gansu Province, with Chengdan 20 as test varieties, 5 treatments were established, including full film double ridge sowing cultivation, full film mulching hole sowing, half film mulching hole sowing, convention- al half film mulching, open ground flat planting, effects of 5 treatments on soil moisture, temperature and maize yield were studied. [ Result ] The soil moisture, temperature of maize in different growth periods under the treatment of full film mulching double ridge sowing cultivation were high- er than that in other treatments, the economic yield was increased by 4.4%, 22.4%, 27.5%, 46.3% respectively, the biomass yield was in- creased by 4.1%, 22.0%, 27.1%, 46.7% respectively. [ Conclusion] The full film mulching double ridge sowing cultivation has obvious yield increasing effect, which should be vigorously promoted in grain production of dry farming region in China.