[Study on the reason why the mixture of urea and superphosphate fertilizer is watery, and its effect on rice yield]
1991
Kim, S.U. | Li, Y.H. (Pyonganbukdo Inst. for Agricultural Science, Jongju (Korea Democratic People's Republic))
When the urea (or nitrate of ammonia) was mixed with superphosphate, the mixture would be watery. The reason of its phenomenon and the loss of fertilizer were clarified and the kinds of additives and its quantity were decided. By clarifying the additives effect on physical and chemical characteristics of the mixture, the urea, superphosphate, potassium, and microelement fertilizers could be mixed to be used for the increase of fertilizer efficiency, which could economise much labour. The yield was increased to more than 6.4-9.5%
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