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尿素—普钙系混配复合粒肥,是我国近年普遍而适用的一种复(混)合肥料.它一方面调整了化肥的氮磷比例,提高了肥料利用率,另一方面也为解决当前过磷酸钙滞销找到了一条新途径.六五期间,复(混)合肥料协作组对其肥效和施用技术连续进行三年五作的试验研究.其结果,在小麦上增产83.9%,比尿素增产61.3%,比重过磷酸钙增产43.6%.在玉来上增产27.7%,比尿素增产6.5%,比重过磷酸钙增产16.4%,而且,连施五作都能持续增产.以基肥或种肥一次条施的效应最佳.既能节省施肥劳力,又能充分发挥肥效.播种时一次条施的平均增产55.9%,分次条施的增产49.7%.条施深度小麦以20—25cm 为宜,玉米以10—15cm 增产最高.
It is a kind of complex (mixed) Hefei fertilizer which is common and applicable in our country in recent years.On the one hand, it adjusts the proportion of nitrogen and phosphorus of fertilizer and improves the fertilizer utilization rate, on the other hand, During the period of the Sixth Five-Year Plan, the compounding (mixing) Hefei feed cooperative group conducted a continuous three-year and five-year trial on its fertilizer efficiency and application technology, and as a result, it increased yield by 83.9% in wheat compared with urea Increase yield 61.3%, the proportion of superphosphate 43.6% increase in jade to yield 27.7%, 6.5% more urea than urea, the proportion of superphosphate increased yield 16.4%, and, even for five crops can continue to increase production. The effect of a strip is the best, which not only can save fertilizing labor but also give full play to the effect of fertilizer.An average increase of 55.9% and 49.7% , Corn to 10-15cm yield the highest.