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1977年我所试制成功的磷酸二氢钾铵,是一种氮、磷、钾三元复合悬浮液体肥料.成品中含氮5-6%,磷酸20-24%,氧化钾6-8%.pH6-7,属中性肥料.此外,还含有钙、镁、硫、铁、硅等多种营养元素.1977-1979年,曾在全省各地区的不同土壤、不同作物上进行试验,结果表明,磷酸二氢钾铵作为农作物根外追肥,具有用量少、成本低,使用方便、增产效果显著等优点.现将试验结果介绍如下.
The potassium dihydrogen phosphate monobasic that I tried successfully in 1977 is a kind of nitrogen, phosphorus and potassium ternary compound suspension liquid fertilizer, containing 5-6% of nitrogen, 20-24% of phosphoric acid and 6-8% of potassium oxide in the finished product. pH6-7 is a neutral fertilizer, in addition, calcium, magnesium, sulfur, iron, silicon and other nutrients from 1977 to 1979, in various regions of the province have been tested on different soil, different crops, the results The results showed that potassium dihydrogen phosphate monobasic is topdressing crops outside the crop with the advantages of less dosage, low cost, convenient use and remarkable yield increasing effect etc. The test results are introduced as follows.