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(一)钾肥是棉花生长发育中必须的肥料,与氮一样具有同等重要的位置。棉花需氮、磷,钾的比例为3:1:3。广大农村应用的钾素来源于有机肥料,它可提供90%的钾,以维持地力。近年来,氮肥供应较多,形成土壤中磷、钾短缺,如棉花缺钾发生红叶茎枯病,推广新棉种的品质下降等。因此,寻找代替钾肥的氯肥补充钾素,就具有现实的意义。
(A) Potash is an essential fertilizer for the growth and development of cotton and has the same important position as nitrogen. Cotton needs nitrogen, phosphorus and potassium ratio of 3: 1: 3. The vast majority of potassium used in rural areas comes from organic fertilizers, which provide 90% of potassium to maintain fertility. In recent years, more nitrogen supply, the formation of phosphorus and potassium in the soil shortage, such as cotton leaf blight occurs potassium deficiency potassium, the promotion of new varieties of cotton quality decline. Therefore, looking for potassium instead of potash fertilizer potassium supplement, it has a realistic meaning.