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棉花叶面喷施以高美施增产效果最好，经济效益最高。其次，磷酸二氢钾，肥力高，也有一定的增产增收作用。以上叶面肥均有推广价值。
Cotton foliar spray with high Meisen yield the best, the highest economic benefits. Second, potassium dihydrogen phosphate, high fertility, but also increase production and income. Above foliar fertilizer has promotion value.