确定农作物的施肥量,是一个比较复杂的问题,它受作物种类及其产量水平、土壤类型及其供肥能力、肥料种类及其利用率、气候、经济等因素的综合影响。而且这些因素又不是固定不变的。目前,一些发达国家已采用电子计算机技术来确定农作物的最佳施肥量。我国在这种技术尚未普及之前,利用简单的数学方法来估算农作物的施肥量,仍具有一定的现实意义。 Determining the amount of fertilizer applied to a crop is a complex issue that is influenced by the crop type and its yield level, the soil type and its availability, the type of fertilizer and its utilization, climate and economy. And these factors are not fixed. At present, some developed countries have adopted electronic computer technology to determine the optimum amount of fertilizer for crops. Before this kind of technology has not been popularized in our country, it still has some practical significance to use simple mathematical methods to estimate the amount of fertilizer applied to crops.