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本试验主要通过氮、磷、钾3个因素、4个不同施肥水平和14个小区,经过严格施肥、播种、田间管理和室内考种,得出在该点地力水平条件下,小麦生产施肥应坚持以氮为主,氮、磷、钾配合施用的原则,根据一元二次方程回归分析,利用产投比进行边际效应分析,得出最佳施肥组合:亩施纯氮15.8kg,五氧化二磷4.9kg,氧化钾7.6kg。为摸清冬小麦在不同施肥单元的优化施肥量、施肥时期和施肥方法,构建小麦科学施肥模型,为完善测土配方施肥技术指标体系提供依据。
This experiment mainly through three factors of nitrogen, phosphorus and potassium, four different fertilization levels and 14 plots, after strict fertilization, sowing, field management and indoor test species, obtained at this point under the conditions of the level of fertility, wheat fertilization should Adhere to the nitrogen-based, nitrogen, phosphorus and potassium with the principle of application, according to the regression analysis of a quadratic equation, the use of production-to-input ratio of marginal effects analysis, the best combination of fertilization: 15.8kg Mushi nitrogen, Phosphorus 4.9kg, potassium oxide 7.6kg. In order to find out the optimal fertilization amount, fertilization period and fertilization method of winter wheat in different fertilization units, the wheat fertilization model was constructed to provide the basis for improving the technical index system of soil testing.