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通过长期定位试验,研究了宁夏半湿润偏旱区农田水分运动规律、主要作物对农田水分的利用、水分对作物生长的影响以及降水资源的利用。结果表明,春小麦水分入不敷出,干旱缺水及降水的季节变化是该区农业生产的主要限制因子,作物水分利用效率低影响了降水生产潜力的发挥,因而开发降水生产潜力是提高该区农业生产力的关键。
Through long-term experiment, the law of farmland water movement in sub-humid and semi-arid regions of Ningxia, the utilization of main crops on farmland water, the effect of water on crop growth and the utilization of precipitation resources were studied. The results showed that the seasonal variation of spring wheat water deficit and precipitation was the main limiting factor of agricultural production in this area. The low water use efficiency affected the potential of precipitation production, so the potential of developing precipitation productivity is to increase the agricultural productivity The essential.