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一增施化肥是迅速提高产量的有效措施之一。一些资料指出:世界化肥用量从1912年到1970年增加16倍,其中氮肥42倍,钾肥14倍,磷肥8倍。我国,1952年按耕地平均亩施用化肥仅0.4斤(标准化肥),到1979年达到70.3斤,27年来粮食总产量增加了一倍。我省化肥用量发展也很快,1965年前每亩平均不足5斤,而且集中在高产社队,但主要是氮肥,到1980年,即达到73斤,除氮肥外,还有磷肥。但,用量不平衡。石家庄市及附
An increase of fertilizers is one of the effective measures to rapidly increase production. Some sources point out that the amount of chemical fertilizer in the world increased 16 times from 1912 to 1970, of which nitrogen was 42 times, potassium 14 times, and phosphate 8 times. In China, only 0.4 kg of chemical fertilizer (standard fertilizer) was applied per mu in arable land in 1952, reaching 70.3 kg in 1979, doubling the total grain output in 27 years. The development of fertilizer consumption in our province is also very fast. Before 1965, the average acreage per mu was less than 5 kg, and concentrated in high-yielding communes and communes, but mainly nitrogenous fertilizers. By 1980, that reached 73 kilos. In addition to nitrogenous fertilizers, there was also phosphate fertilizer. However, the amount is not balanced. Shijiazhuang City and attached