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3. 灌好冬水、保好墒、是冬小麦安全越冬的关键措施: (1)冬灌:冬灌是保苗越冬的一项重要措施。日喀则主要农区,越冬期蒸发量大、几乎无降水。冬灌不但能供给麦苗冬季、早春所需的水分,提高地温,而且因为水的热容量大、能够减少地温日夜变化幅度,减轻冻害,特别是沙性大的土壤和墒情不好的地块更为重要。
3. Irrigation winter water, keeping moisture, winter wheat winter is the key to safe measures: (1) winter irrigation: winter irrigation is an important measure to protect the winter seedlings. Shigatse main agricultural areas, overwintering evaporation, almost no precipitation. Winter irrigation can not only supply wheat seedlings in winter, early spring water required to improve ground temperature, and because of the large heat capacity of water, can reduce the temperature range of day and night, reduce the frost damage, especially the sandy soil and soil moisture is not important land more important .