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玉米地膜覆盖栽培是一项高投入高产出的集约生产方式,土壤培肥是其高产稳产的基础。为探索地膜玉米连作培肥技术,从1987～1991年在承德地区地膜玉米集中产区进行了连作培肥定位试验。一、基本情况试验在平泉县茅兰沟乡九神庙村进行,土壤为中壤质淋溶褐土,肥力中上等,含有机质1.623%,全氮0.1%、速效氮84.0ppm,五氧化二磷14.58ppm。供试玉米品种为中单2号.面积1.2亩
Mulching plastic mulching is a intensive production method with high input and high output. Soil fertilization is the basis of its high and stable yield. In order to explore the continuous cropping techniques of mulching maize, from 1987 to 1991, the continuous cropping experiment was conducted in the mulched corn in Chengde area. I. Basic conditions The experiment was carried out in Jiu Shen Miao Village, Maolanggou Township, Pingquan County. The soil was medium-lobed leached cinnamon soil with high fertility, containing 1.623% of organic matter, 0.1% of total nitrogen, 84.0ppm of available nitrogen, Phosphorus 14.58ppm. Test corn varieties for the single No. 2. Area of 1.2 acres