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为了解复肥在我省不同土壤和不同作物上的增产效果,充分发挥复肥的优越性,并正确认识和处理复肥和单肥间的关系,我们根据全国化肥试验网的要求于1981——1985年进行了复肥肥效及施用技术的试验研究,现将主要结果总结如下。一、试验材料和方法本研究分两阶段进行。1981——1983年主要研究了氮磷复肥的肥效及施用技术。1983——1985年则主要研究了磷酸二铵的肥效及适宜用量等。前者为罗马尼亚产品,含N20%,含P_2O_50%,据本所分析,磷的水溶率约为50%。后者系美国产品,含N18%,含P_3O_546%。
In order to understand the yield increase effect of compound fertilizer in different soils and different crops in our province, give full play to the superiority of compound fertilizer, and correctly understand and handle the relationship between compound fertilizer and single fertilizer, according to the requirements of National Fertilizer Experiment Network, - In 1985 the compound fertilizer efficiency and application of experimental research, the main results are summarized below. First, the test materials and methods The study was conducted in two stages. 1981 - 1983 mainly studied the nitrogen and phosphorus fertilizer efficiency and application techniques. 1983 - 1985, the main study of the diammonium phosphate fertilizer efficiency and appropriate dosage. The former is a Romanian product containing N20%, containing P_2O_50%, according to our analysis, the water-soluble phosphorus rate of about 50%. The latter is the United States products, containing N18%, containing P_3O_546%.