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六十年代,国外大肆宣传的“绿色革命”,是通过培育耐肥、矮秆的新品种和增施化肥,使水稻和小麦的产量大幅度地提高。这次“绿色革命”说到底是在“肥”字上下了一番功夫而获得的。但是,就增加农作物产量而言,“绿色革命”当前已发展到了一个稳定阶段。因为农作物的干重量中只有5～1O％来源于土壤的养分和肥料,因此单靠增施化肥以达到增产目的就日益困难了。
In the 1960s, the “green revolution” proclaimed overseas was to raise the yield of paddy rice and wheat substantially by cultivating new varieties and fertilizers that are resistant to fertilizer and short stalk. This “green revolution” is exactly the “fat” word down a lot of effort obtained. However, in terms of increasing crop yields, the “green revolution” has now reached a stage of stabilization. Because only 5% to 10% of the dry weight of the crop comes from nutrients and fertilizers in the soil, it is increasingly difficult to increase fertilization by increasing fertilizer alone.