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春旱是指出现在3—5月份的干旱,主要影响我国各地春播玉米播种、出苗与苗期生长。北方地区,春季气候干燥多风,水分蒸发量大,遇冬春枯水年份,易发生土壤干旱,对玉米的播种、出苗及苗株生长危害颇大。1.春旱对玉米的危害(1)推迟播种期无水源条件的地区,春季土壤严重干旱,无法耕种玉米,只能等雨播种,易错过
Spring drought refers to the drought that occurred in March-May and mainly affects the sowing, emergence and seedling growth of spring sowing maize in various parts of China. In the northern area, the spring climate is dry and windy with large amount of water evaporation. In winter and spring dry years, soil arid soil tends to occur, which is harmful to sowing, emergence and seedling growth of maize. 1. Spring drought on corn (1) postponed areas without water conditions during sowing, the soil in spring is a serious drought, unable to cultivate corn, can only wait for rain planting, easy to miss