一增施化肥是提高单位面积产量最迅速、有效的措施之一。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。在我国,1952年全国按耕地平均每亩施用化肥仅0.4斤(标准化肥,下同),到1979年达到70.3斤,27年来粮食总产量增加了一倍。河北省的化肥用量发展也很快,1965年以前每亩平均用量不足5斤,而且主要集中在小部分高产社队,化肥品种以氮肥为主,到1979—1980年间,化肥用量已达到每亩73斤,化肥品种除氮肥外,尚有磷肥。但是化肥用量仍然极不平衡,以河北平原而言,石家庄市及其附近的高产县如藁城、栾城、正定、晋县等化肥用量可达140—200斤,粮食产量在900斤以上,其次,京广沿线定县、安国、永年、柏乡以及邯郸、保定等市县化肥用量达到100—140斤,产量多在700斤大左右;而广大黑龙港地区除少数比较高产的县化肥用量达到60—100斤以外,大多为30—60斤,粮食产量在400斤 An increase of fertilizer is one of the most rapid and effective measures to increase yield per unit area. 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 our country, in 1952, only 0.4 kg of chemical fertilizer per acre was applied nationwide (standard fertilizer, the same below), reaching 70.3 kg in 1979, doubling the total grain output in 27 years. The amount of fertilizer used in Hebei Province has also developed rapidly. Before 1965, the average amount of fertilizer used per mu was less than 5 kg. Most of the fertilizers were concentrated in a small number of high-yielding communes and brigades, while the varieties of fertilizers were dominated by nitrogen fertilizers. From 1979 to 1980, 73 pounds, fertilizer varieties in addition to nitrogen, there are still phosphate fertilizer. However, the amount of chemical fertilizer is still very uneven. As far as Hebei Plain is concerned, in Shijiazhuang City and its nearby high-yielding counties such as Yuncheng, Luancheng, Zhengding and Jinxian, the dosage of chemical fertilizers can reach 140-200 kg and the grain output is above 900 kg. Second, along the Beijing-Guangding Ding County, Angola, Yongnian, Bo Xiang and Handan, Baoding and other cities and counties fertilizer consumption reached 100-140 pounds, the output more than about 700 pounds; and the majority of Heilonggang area except for a few relatively high yield of fertilizer Reached 60-100 pounds, mostly 30-60 pounds, grain output at 400 pounds