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在冬小麦全生育期只灌3水共计1950m3/hm2的有限灌溉条件下,通过对目前生产上常用的8个节水品种冬前生长形态、收获时作物指标的系统研究,筛选出适合北京地区的2个水分利用效率高的品种;同时对冬小麦不同生育时期的作物需水与供水平衡关系进行分析,对冬小麦的日耗水强度和土壤水变化等需水规律进行研究,为制定小麦生产的节水栽培技术规程提供依据和参考。
Under the condition of limited irrigating irrigation of only 1950m3 / hm2 in the whole growth period of winter wheat, we systematically studied the growth patterns of 8 water-saving varieties commonly used in production and crop indicators at harvest at the present time, 2 high water use efficiency varieties; at the same time, the relationship between water requirement and supply balance of winter wheat at different growth stages was analyzed. The water consumption intensity of winter wheat and soil water changes were studied. Water cultivation techniques provide the basis for the reference and reference.