随着化肥工业的发展和农村联产责任制的实行,农民施用化肥的数量不断增加,这对提高小麦产量起了重大作用。但由于科学技术还没有普及,不少农民存在着肥多多施,肥少少施,有啥肥施啥肥的现象。从而造成施肥结构不合理,成本提高,产量下降。为此,我们在1980年土壤普查后,针对小 With the development of the fertilizer industry and the implementation of the system of joint responsibility in rural areas, the number of farmers applying chemical fertilizers has been on the rise, which has played a significant role in increasing the yield of wheat. However, due to the lack of popularization of science and technology, many farmers have the phenomenon of applying more fertilizer, less fertilizer and less fertilizer. Resulting in irrational fertilization structure, increased costs and decreased output. For this reason, we focused on the small after the 1980 census of soil