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我国化肥施用量全年大约1亿吨,每亩施用量高于发达国家平均水平,但有效利用率只有40％左右。也就是说,如果能将有效利用率提高10个百分点,全国就相当于增施化肥1 000万吨,节约资金100多亿元,可增产粮食150亿千克。 那么我国化肥有效利用率低的原因何在?如何才能改变这种状况? 从大量肥料试验结果看,我国化肥的增产效果不比国外试验结果低,但生产实践中显示的效果就不同了。农科院土肥所化肥室的张夫道认为,化肥使用不当是影响肥效的一个重要原因。正确的施肥办法应是用沟施或穴施,但农民图省事,往往一撒了之。张夫道说:“这种
Fertilizer application throughout the year about 100 million tons per acre applied higher than the average level of developed countries, but the effective utilization rate of only about 40%. In other words, if the effective utilization rate can be increased by 10 percentage points, the entire country will amount to 10 million tons of chemical fertilizer, save more than 10 billion yuan of funds, and increase grain output by 15 billion kilograms. So what is the reason why the effective utilization of chemical fertilizers in China is low? How can we change this situation? From the results of a large number of fertilizer tests, the yield of chemical fertilizers in China is no lower than that of foreign test results, but the results in production practice are different. Zhang Fu Road, Department of Chemical Fertilizer, Academy of Agricultural Sciences that the improper use of fertilizers is an important factor affecting fertilizer efficiency. The correct method of fertilization should be applied with ditch facilities or facilities, but farmers save trouble, often a sprinkle it. Zhang Fu Road, said: "This