钾是作物生长发育所必需的三大营养元素之一。土壤缺钾,直接妨碍作物根系和茎叶的正常发育,影响对水分和养分的吸收及光合产物的合成和运输,使作物抗病、抗旱、抗寒、抗倒伏能力降低,果实减产,品质下降。摸清土壤钾素含量状况,增施钾肥,控制土壤钾素的下降,使土壤钾素收支平衡,从而促进兴城市高效、优质农业的发展。 Potassium is one of the three major nutrients required for crop growth and development. Potassium deficiency in soil directly hinder the normal development of crop roots and stems and leaves, affect the absorption of water and nutrients and the synthesis and transport of photosynthetic products, and make the crops resistant to disease, drought, cold, lodging resistance reduced, the fruit yield reduced, the quality decreased . To ascertain the status of soil potassium content, increase the application of potassium, soil potassium control decline, so that the soil potassium balance of payments, so as to promote Xingcheng efficient, high-quality agriculture.