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春季麦田划锄,主要是减少土壤水分蒸发,通气提高地温,消灭杂草等。同时减少水分,土壤降低热容量,经日光照射,一般锄后7天内,白天5厘米地温增高0.5—1℃。另外,划锄还可加强土壤微生物活动,促进养分转化。盐渍地多划锄还可以使表土疏松通气,减少水分蒸发和盐分上升,改善土壤盐、凉、湿、板等不良状况。
Spring wheat field plan hoe, mainly to reduce soil moisture evaporation, ventilation to improve ground temperature, eliminate weeds and so on. At the same time reduce the moisture, soil heat capacity, by sunlight, the general hoe within 7 days, 5 cm during the daytime temperature increased by 0.5-1 ℃. In addition, draw hoe can also enhance soil microbial activities, and promote nutrient conversion. Saline to more planning hoe can also loose the surface soil aeration, reduce evaporation and salt rise in water to improve soil salt, cold, wet, board and other undesirable conditions.