棉花施钾肥可防凋枯病棉花凋枯病是棉花生产过程中的一种常见病，一般在８月上旬发生。主要原因是由于棉田土壤中的钾元素供应不足，棉株体内营养失调引起。该病一般多发生在沙质土和飞沙土日内，由于这些土质层薄，有机肥少，地力差。或者由于土壤中单一施用氮肥、农家肥... Potash fertilizer to prevent the occurrence of withered cotton blight Cotton blight is a common disease in the cotton production process, generally occurs in early August. The main reason is due to inadequate supply of potassium in the soil in cotton fields, cotton plant caused by malnutrition in vivo. The disease usually occurs in sandy soil and sandy soil days, due to the thin layer of soil, organic fertilizer less, poor soil. Or as a single application of nitrogen in soil, peasant fertilizer ...