Method for influencing moisture soil nitrogen mineralization characteristics and crop yield by long-term positioned fertilization

The invention provides a method for influencing moisture soil nitrogen mineralization characteristics and crop yield by long-term positioned fertilization. By means of in-situ field and anion-cation exchange resin process, the influence of long-term application of nitrogen fertilizer and supportive phosphorus potassium fertilizer upon non-calcareous moisture soil nitrogen in-situ field mineralization characteristics, crop nitrogen absorption and crop yield is studied, and a relation of the influence with crop nitrogen absorption and crop yield is studied; total nitrogen of soil and plants is measured by Kjeldahl determination, NO3-N and NH4-N in soil and ion exchange resin bags are extracted with KCl solution, and after filtering, determinations are made respectively by means of dual-wavelength ultraviolet spectrometry and Nessler's reagent colorimetry. Theoretical basis is provided for the sustainable development of a soil nitrogen nutrition bank, controlling of soil nitrogen supply in this area and ac