化肥在农业生产上的施用量越来越多,但从整个情况看,施用中还普遍存在着缺乏科学依据,带有很大的盲目性,认为化肥施用量越大越好,不讲经济效益。那么怎样科学计算化肥施用量呢?要解决不同产量水平的作物施用化肥量,是一个比较复杂的问 Fertilizer application in agricultural production more and more, but from the overall situation, the application is still widespread lack of scientific basis, with a great blindness, that the larger the better the chemical fertilizer application, do not speak about economic benefits. So how to scientifically calculate the amount of fertilizer application? To solve the different levels of crop yield of chemical fertilizer is a more complicated question