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磷酸二氢钾(KH_2PO_4)含磷22%,含钾28%,是作物吸收利用的有效态养分,具有用肥省、见效快、利用率高的特点。(一)稻棉喷施磷酸二氢钾的增产效果稻棉喷施磷酸二氢钾可增产10～20%。80年新民公社衣科站在单季稻上试验,供试品种“新秀”,于9月26日灌浆期喷一次,浓度0.2%,实收亩产886斤,比对照增产24.09%。81年向花公社农科站在后季稻“227”、“683”品种上作试验,“227”喷两次的亩产526.9斤,比对照增产9.6%,比喷施一次的增产
Potassium dihydrogen phosphate (KH 2 PO 4) contains 22% of phosphorus and 28% of potassium, which is an effective nutrient for crop absorption and utilization. It has the characteristics of high efficiency and high utilization rate of fertilizer. (A) rice paddy spraying potassium dihydrogen phosphate production effects Rice paddy spraying potassium dihydrogen phosphate can increase 10 to 20%. 80 years of Xinmin commune clothing Station Stationed on a single crop of rice, the test varieties “rookie” sprayed on September 26 filling stage, the concentration of 0.2%, real yield 886 pounds per mu, 24.09% increase over the control. In 1981, the experiment was carried out on the “227” and “683” varieties of the following season paddy at Agricultural Station of Flower Commune. The output of “227” was 526.9 kg per mu twice, yielding 9.6% more than that of the control,