浅议覆膜保墒旱作节水农业技术

覆膜保墒技术是发展旱作节水农业的重要科技支撑。现代意义上的覆膜保墒旱作节水农业技术在覆膜时间上包括秋覆膜和早春覆膜，在覆膜方式上包括半膜覆盖和全膜覆盖，在覆盖膜延期利用上包括留膜留茬越冬和一膜两年用。与传统地膜覆盖种植方式相比，现代覆膜保墒旱作节水农业技术基本实现了“五改”：一是改作物播期覆膜为秋季或早春覆膜。二是改半膜覆盖为全膜覆盖，三是改一膜一年用为一膜两年用，四是改垄面平播为双垄沟播，五是改几乎全部种植玉米为因地制宜种植玉米、马铃薯、向日葵、西甜瓜、谷子等各种特色抗旱作物。

Film Preservation of Soil Moisture Water-saving Agricultural Technology

Laminating moisture conservation technology is an important scientific and technological support for the development of water-saving agriculture. Including the autumn coated and early spring laminating coating in the modem sense of the soil moisture water-saving agricultural technology in the coating time semi film coverage and film coverage, including in the coating way to stay membranes, including the extension of the cover film using with stubble wintering and a film two years. Compared with the traditional plastic film cover cropping, the modern coating soil moisture water-saving agriculture technology to achieve the basic ＂five changes＂： GM crops sowing date coating for the fall or early spring coating change semimembranosus coverage for the whole film coverage, change a film for a film two years with a one-year change ridge surface level multicast double furrow sowing, five changed almost all planting corn planting corn for local conditions, potato, sunflower, melon, millet drought- resistant crops and other characteristics.