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我省化学肥料施用量逐年增加,1970—1980年十年间约增加了三倍。在化肥施量大的地区出现了各式各样的问题。特别是对化肥的施用量与产量、经济效益、纯收益之间的关系有许多不同看法。现就这个问题谈一点认识,与有关同志商榷。一、化肥施用量与作物产量的关系化肥施用得当,作用显著,已成为一项增产的重要措施。在一定幅度内,化肥施用量与作物产量成正比。河西灌区,在小麦每亩施氮(纯氮,下同)量4—16斤范围内,绝
The amount of chemical fertilizers used in our province has been increasing year by year, with a tripling in the decade between 1970 and 1980. A wide range of problems have emerged in areas where chemical fertilizers are large. In particular, there are many different views on the relationship between the amount of chemical fertilizer applied and the yield, economic benefits, and net income. We are now talking about this issue and discussing it with the relevant comrades. First, the relationship between the amount of fertilizer and crop yield Fertilizer properly applied, the role of significant, has become an important measure to increase production. Within a certain range, the amount of fertilizer applied is directly proportional to the crop yield. Hexi Irrigation Area, in the wheat nitrogen per acre (pure nitrogen, the same below) the amount of 4-16 kg range, absolutely