增施肥料,是提高作物产量的有效措施.但并不是施肥越多,产量就越高.施肥不当造成减产的事例常有发生.所以施肥要有科学的施肥制度.科学的施肥制度,不仅要保证作物高产、稳产、低成本,还要逐年提高土壤肥力.这就需要研究有机肥和化肥及其配合施用.近年来,土肥工作者在这方面作了一些研究,但多注重短期研究,长期定位研究较少.本试 Fertilizer application is an effective measure to increase crop yield, but not the more fertilization, the higher the yield .Influence caused by improper fertilizer production often occur.So fertilization should have a scientific system of fertilization.Scientific fertilization system, not only to In order to ensure high yield, stable yield and low cost of crops, it is also necessary to improve soil fertility year by year.This requires the study of organic fertilizers and chemical fertilizers and their application.In recent years, soil fertilizers have done some research in this area, but more emphasis on short-term research, long-term Positioning less research