科学施肥”即根据土壤供肥状况，作物需肥特点选择适合的肥料品种在最适当的时期，用最好的方法施用最佳的数量，以达到高产、优质、改良土壤且无污染的效果。从“科学施肥”的定义上就可以看出科学施肥与农业发展的极为密切的关系。但长期以来，对科学施肥技术重视不够，... Scientific fertilization “that is, according to the status of soil fertilization, crop fertilizer characteristics to choose the appropriate fertilizer varieties in the most appropriate period, the best way to use the best amount to achieve high yield, high quality, soil improvement and pollution-free results. From the definition of ”scientific fertilization", we can see the extremely close relationship between scientific fertilization and agricultural development, but for a long time, we have paid insufficient attention to scientific fertilization technology, ...