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科学施肥是科技兴农的重要内容之一,当前从世界上看农业增产主要依靠化学肥料来支撑,而且施肥数量和施肥水平都在不断提高,发达国家不仅施肥数量高,肥料利用率也高,据报导肥料利用率高的国家可达70％,我国肥料到利用率仅在30％左右。肥料利用率低的主要原因是施肥方法和肥料配比不合理造成的。根据农作物需要,将大量元素与中量元素、微量元
Scientific fertilization is one of the important contents of developing agriculture through science and technology. At present, the increase of agricultural output in the world relies mainly on chemical fertilizers to support it. Both the quantity of fertilization and the level of fertilization are continuously increasing. In developed countries, not only the quantity of fertilizers is high, It is reported that up to 70% of countries with high fertilizer utilization rate, the utilization rate of fertilizer in China is only about 30%. The main reason for the low utilization rate of fertilizer is the unreasonable result of fertilization method and fertilizer ratio. According to crop needs, a large number of elements and the amount of elements, trace elements