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钾是作物生长发育所必需的营养要素之一。在作物体内钾充足时,茎叶粗壮,抗倒伏,根系发达,对养分的吸收及合成产物的形成和运转加快,抗寒、抗旱、抗病能力增强。因此,施用钾肥能提高作物产量,改善品质,增强抗逆性能。省农科院土肥所综合全省五百七十多项次试验证明,施用钾肥(每亩约十五斤硫酸钾)对各种作物均有不同程度的增产效果:水稻为百分之五点八八,大麦为百分之十七点六,小麦为百分之十一点二,玉米为百分之十一点四,油菜为百分之十二点七,棉花为百分之八点五,甘薯为百分之十一点九。
Potassium is one of the necessary nutrients for crop growth and development. When the crop is rich in potassium, stems and leaves are sturdy, lodging-resistant, developed root system, the absorption of nutrients and the formation and operation of synthetic products to speed up, cold, drought, disease resistance. Therefore, the application of potassium fertilizer can improve crop yield, improve quality and enhance resistance to stress. Provincial Academy of Agricultural Sciences soil and fertilizer comprehensive province more than 570 times the tests showed that the application of potassium (about 15 kg of potassium sulfate per acre) on various crops have different levels of yield increase: rice is 5% 88, barley 17.6%, wheat 11.2%, corn 11.4%, oilseed rape 12.7% and cotton at 8% Five, sweet potato is 11.9 percent.