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一、补施盖顶肥 盏顶肥是防止后期早衰和夺取秋桃盖顶的有效措施,施肥以氮肥为主,施用时间一般在立秋前,最迟不晚于8月15日,视棉花长势,667平方米用尿素5～10公斤,穴施或浇施在距棉株基部6厘米远处的土壤内。 二、增施钾肥 棉株缺钾时,容易感染生理红叶茎枯病,发病后造成棉花失绿、枯死,从而早衰。防治上除基肥施钾外,可在花铃期施适量的草木灰、饼肥或生物钾肥等。
First, the top-dressing fertilizer Top-dressing is to prevent premature aging late and to win the autumn peach top effective measures to fertilize the main nitrogen, the application time is generally before the fall, no later than August 15, depending on the cotton growth , 667 square meters with urea 5 to 10 kg, points or pouring facilities in the cotton plant 6 cm away from the base of the soil. Second, the increase of potassium fertilizer Potassium deficiency, susceptible to physiological leaf blight, the incidence of cotton loss of green, dead, and thus premature senility. In addition to the prevention and treatment of basal application of potassium, the flower can be applied at the appropriate amount of ash, cake fertilizer or bio-potash fertilizer.