钾是作物必需的三大营养要素之一,它能促进作物的光合作用,有利于糖分和淀粉的合成。钾还能促进作物根系发育,提高禾谷类作物(如水稻、小麦等)的分蘖能力,可使茎秆强壮、穗大粒多,增强抗倒伏能力和抗病能力。作物缺少钾素、常表现为叶尖发黄、生长迟缓、容易倒伏、产量下降。 Potassium is one of the three essential nutrients required for crops. It promotes the photosynthesis of crops and is good for sugar and starch synthesis. Potassium also can promote crop root development, improve the tillering ability of cereal crops (such as rice, wheat, etc.), can stalk strong, spike large grain, enhance lodging resistance and disease resistance. Crops lack of potassium, often manifested as yellow leaves, slow growth, easy to lodging, production decline.