Abstract: In order to determine the optimum fertilization amount and fertilization model of winter wheat in different ecological regions,the effects of nitrogen, phosphorus and potassium fertilizer on winter wheat cultivation in different ecological regions of Hebei Province were studied by "3414" field fertilizer efficiency test. The results showed that the yield of winter wheat varied greatly in different ecological regions, which showed that the yield of winter wheat was in the order of piedmont plain > low plain > Taihang hilly area > coastal plain area. The order of yield increase and yield increase rate of wheat field in different regions was NPK > NP > NK > PK. The optimum application of nitrogen fertilizer for winter wheat in different areas should be 200.77,201.18,151.07 kg/ha,and the optimum application of phosphorus fertilizer should be 144.23,140.44,98.37,120 kg/ha,and the optimum application of potassium fertilizer should be 144.23,140.44,98.37,120 kg/ha。The ability of supplying fertilizer of soil in four ecological regions was as follows:potassium fertilizer > phosphate fertilizer > nitrogen fertilizer. The order of soil nitrogen supply capacity was Taihang mountain > low plain > piedmont plain > coastal Plain, P fertilizer supply capacity was Taihang mountain > piedmont plain > low plain > coastal plain, and K supply capacity was low plain > Taihang mountain > piedmont plain > coastal plain. Except the Piedmont plain, the agronomic efficiency of nitrogen fertilizer, phosphorus fertilizer and potash fertilizer of winter wheat were the highest, the potassium fertilizer was the lowest, and the nitrogen fertilizer was the middle. It is concluded that the application of phosphorus fertilizer should be paid more attention to the low plain, Taihang mountain hills and coastal plain areas, and the increase of nitrogen application rate in the piedmont plain area can effectively increase the winter wheat yield.

Key words: Winter wheat, Nitrogen fertilizer, Phosphorus fertilizer, Potassium fertilizer, "3414", Fertilizer supply capacity, Agronomic efficiency, Optimum fertilization rate

CLC Number: 

• S143