【摘 要】
：
陇东地处黄土高原西部温带气候区,农业区年降水500～640毫米,冬小麦种植面积可达粮田面积的70%。但是,影响冬小麦产量的自然灾害中,干旱危害的比例却占52～56%。冬小麦一生究竟
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陇东地处黄土高原西部温带气候区,农业区年降水500～640毫米,冬小麦种植面积可达粮田面积的70%。但是,影响冬小麦产量的自然灾害中,干旱危害的比例却占52～56%。冬小麦一生究竟用了多少水?其它水那里去了?这些问题都是克服自然灾害,开发
Longdong is located in the temperate climate zone of the western Loess Plateau. The annual precipitation in the agricultural area is 500-640mm, and the winter wheat planting area can reach 70% of the grain area. However, among the natural disasters affecting the output of winter wheat, the proportion of drought hazards accounted for 52 ~ 56%. How much water did winter wheat use during its lifetime? Where did other water go? These problems are all overcoming natural disasters and developing
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