应用１５Ｎ示踪技术，采用盆栽方法进行试验。结果表明，一定比例的有机无机肥配施，既可获得与单施等氮量无机肥同样高的产量，又能提高肥料氮在土中壤的总残留量，同时使土壤有机质和速效磷含量增加。全施有机肥不能获得较高产量。基肥氮主要用于小麦营养器官的形成，追肥氮则主要用于繁殖器官的形成。土壤氮的供应占小麦吸氮总量的５４．５４～６５．７１％，培肥地力是小麦持续高产稳产的重要措施。 Application of 15N tracer technology, using potted methods for testing. The results showed that a certain proportion of organic and inorganic fertilizers could not only achieve the same high yield as inorganic nitrogen fertilizer but also increase the total residual nitrogen of fertilizers in soil and soil organic matter and available phosphorus increase. The whole organic fertilizer can not get higher yield. Basal nitrogen is mainly used for the formation of wheat vegetative organs, top dressing nitrogen is mainly used for the formation of reproductive organs. Soil nitrogen supply accounts for 54.54-65.71% of the total nitrogen uptake of wheat, and fertilizing land fertility is an important measure to continue high and stable wheat yield.