In the late stage of peanut growth, spraying foliar phosphorus and potassium fertilizer has obvious effect on increasing yield. The specific method is: put 2 to 3 kilograms of superphosphate into 100 kilograms of clear water, stir and soak, after a day and night, take the supernatant liquid for spraying, spraying once every 7-10 days, even spray 2 to 3 times, about 60 kg per mu. Be careful to remove the residue completely so as not to damage the blade. Foliar application of potassium fertilizer, generally formulated with plant ash. Take 5-10 kilograms of ash without rain, add 100 kilograms of water, stir well, soak for 12 to 14 hours, take the clear solution, spray about 60 kilograms per acre. An aqueous solution of potassium sulfate or potassium chloride may also be used, and 100 kg of clear water may be added with 2 kg of potassium sulfate or potassium chloride. After stirring and dissolving, a 2% solution of potassium sulfate or potassium chloride may be added, and 60 kg per acre may be sprayed. . Spray once every 7-10 days, spray 2 or 3 times.
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