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连续５年的钾肥肥效研究表明：大麦、小麦、玉米、大豆在白浆土、草甸土、暗棕壤上增施钾肥增产１０％左右。土壤速效钾（Ｋ２Ｏ）含量大于１６０ｍｇ／ｋｇ的土壤，增施钾肥亦表现有效。３年的草甸土钾肥定位试验初步表明：未曾施钾的土壤，增施钾肥有效。未秸秆还田的土壤钾肥肥效优于秸秆还田的土壤。连续３年秸秆还田，增施钾肥无效。钾肥应投放到缺钾土壤和对钾敏感的作物上。颗粒钾肥解决了大面积机械化施钾肥的难题，为加速钾肥的推广起到推动作用。
Five years of continuous research on potash fertilizer efficiency showed that the increase of potash yield of barley, wheat, corn and soybean in white soil, meadow soil and dark brown soil increased about 10%. Soil available K (K2O) more than 160mg / kg of soil, the increase of K fertilizer also showed effective. Three years of meadow soil potassium locating experiment initially showed that: without potassium in the soil, the effective application of potassium. The effect of non-straw returning soil potassium fertilizer is better than straw returning soil. Three consecutive years of straw, increasing potash ineffective. Potash should be fed to potassium-deficient soils and potassium-sensitive crops. Particle potash fertilizer to solve the problem of large areas of mechanized potash fertilizer to promote the promotion of potash to play a catalytic role.