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3、化肥施用:1989年全国化肥施用总量为2357.1万吨(折纯量,实物量为9709.1万吨),其中:氮肥1536.8万吨,磷肥418.9万吨,钾肥120.5万吨,复合肥280.9万吨。各种肥料占施用总量的比重为:氮肥65.2％,磷肥17.8％,钾肥5.1％,复合肥11.9％。氮磷钾的比例大体上是1:0.273:0.078。而1985年-1986年的氮磷钾比例分别是:1985年为1:0.258:0.068,1986年为1:0.274:0.059,1987年为1:0.280:0.069,1988年为1:0.270:0.071(详见表二)。可见,1985年以来我国化肥的施用结构只是微变,并没有明显的改善。
3. Fertilizer application: In 1989, the total amount of fertilizer application in China was 23.571 million tons (the pure volume was 97.701 million tons), of which: 15,368,000 tons of nitrogen fertilizer, 4,189,000 tons of phosphate fertilizer, 1,205,000 tons of potash fertilizer and 2,809,000 tons of compound fertilizer Ton. The proportion of various fertilizers in total amount of application is: 65.2% of nitrogen fertilizer, 17.8% of phosphate fertilizer, 5.1% of potash fertilizer and 11.9% of compound fertilizer. The ratio of NPK is roughly 1: 0.273: 0.078. The ratios of N, P, and K from 1985 to 1986 were 1: 0, 258: 0, 068 in 1985, 1: 0 in 1986, 0: 059 in 1987, 1: 0 in 280: 0, and in 1988 it was 1: 0.270: 0.071 See Table 2 for details). Visible, since 1985, China’s fertilizer application structure is only slightly changed, and no significant improvement.