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近几年来,作物根外追肥面积越来越大。生产实践充分证明,这项措施能够培育健壮植株,在所施肥料中还可加上某些农药兼治病虫害,增产显著,经济效益高。磷酸二氢钾(KH_2PO_4)是一种高效复合肥料,含P_2O_550％,含K_2O30％。在小麦、水稻、棉花、甜菜、油菜、油葵的生长期适时喷洒磷酸二氢钾,可以收到事半功倍的效益。 经大面积喷洒证明,在小麦拔节孕穗和扬花灌浆期,水稻拔节孕穗期,每亩喷洒磷酸二氢钾150—250克,并加尿素每亩200—500克,平均增产8—10％。如果使用飞机喷洒,亩增加收入为根外喷肥亩成本的4—5倍。在进
In recent years, crops outside the top dressing area is growing. Production practice has fully proved that this measure can cultivate robust plants, fertilizers can also be applied in certain pesticides and pests and diseases, significant yield increase, high economic efficiency. Potassium dihydrogen phosphate (KH 2 PO 4) is a highly efficient compound fertilizer containing P 2 O 550% and K 2 O 30%. Spraying potassium dihydrogen phosphate in the growing season of wheat, rice, cotton, sugar beet, rapeseed and oil sunflower can receive multiplier effect. Large-area spray proved that in the wheat jointing booting and flowering filling stage, rice jointing booting spike, spraying potassium dihydrogen phosphate per acre 150-250 grams, and add 200-500 grams of urea per mu, an average yield of 8-10%. If you use aircraft spraying, mu increase the income of 4-5 times the cost of root sprayed mu. In progress