旱作农业增产的关键技术是如何提高降水利用率。我们在传统旱作农业的基础上,实行生物覆盖并与化学覆盖相结合,巧妙地安排间作套种、条带种植和沟垄种植,建立相应的合理轮作倒茬制度,根据作物生育期长短的时间差、高低秆的空间差以及不同根系的营养差,进行了科学的搭配,形成了不同形式的作物组配单元,例如:“麦||棉/豆”、“麦/花生/玉米”、“油菜||棉花||棉花(复播)”、“菠菜||瓜类/蔬菜”等,使常规大田耕种的一年一作变为一年多作,一熟制逐步变成多熟制,尽可能地减少土壤蒸 How to Improve Rainfall Utilization Efficiency The Key Technology of Dry Land Agriculture Increasing Production. Based on the traditional dry farming, we implemented biological cover and combined with chemical cover, cleverly arranged intercropping, belt planting and furrow planting, and established a reasonable rotation system. According to the time difference of crop growth period, The spatial difference between the height and the height of the stalk and the poor nutrition of the different roots were scientifically matched to form different combinations of crop units such as “wheat || cotton / bean”, “wheat / peanut / corn”, “rape | | Cotton || Cotton (Multicast) ”,“ Spinach || Melons / Vegetables ”and so on, so that the conventional farming for one year and one year into more than one year, a cooked system gradually become more cooked, as far as possible Reduce soil steams