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玉米喷施磷酸二氢钾后,一般增产幅度在10％至13％左右,高的可达15％以上。 磷酸二氢钾的叶面喷施浓度,背负式喷雾器浓度一般在0.2％左右,机动喷雾器可扩大一倍浓度。喷施时间～般在8月上中旬为宜。在这期间内每隔10天喷一次,连喷2次。 磷酸二氢钾在施用前可在溶液中加入尿素,配成含尿素0.5％～1.0％的肥液混喷,以避免在叶面上形成结晶现象,提高效果。
Corn sprayed potassium dihydrogen phosphate, the general rate of increase of about 10% to 13%, high up to 15%. Potassium dihydrogen phosphate foliar spraying concentration, knapsack sprayer concentration is generally about 0.2%, motorized sprayer can double the concentration. Spraying time ~ as usual in August on the middle. During this period spray every 10 days, even spray 2 times. Potassium dihydrogen phosphate can be added to the solution before the application of urea, dubbed urea fertilizer containing 0.5% to 1.0% mixed spray to avoid the formation of crystallization on the foliage to improve the effect.