The Effect of NPK Fertilizer Combined with Soil Organic Manure on Soil Nutrition and Wheat Yield Increasing

To tackle the problems such as lower soil organic matter concentration,lower soil N reserves,descending yield increasing potential and lower yield stability in Taihang Piedmont Plain,study the effect of NPK fertilizer combined organic manure on soil organic matter concentration and soil nutrient concentration such as nitrogen,phosphorous and potassium,indict the specified quantity.Field experiments are executed in Malan farm,Xinji,Hebei.Result shows that NPK fertilizer combined organic manure is better than NPK fertlizer combined corn straw with equal nutrient quantity.For different base fertilizer plots,compared wth the CK with no fertilization,soil organic matter,total N,available N,total P,available P and available K increased respectively within 14.59%~19.2%,5.7%~14.81%,10.38%~24.30%,8.63%~10.89%,93.19%~107.24% and 17.69%~55.18% in concentration.Yield increased within 75.64%~79.7%.the yield increasing stability index increased within 3.03~3.19.In area of Taihang Piedmont Plain,the fertilization rates in fertilizer N 210 kg·hm-2,P2O5 90 kg·hm-2,K2O 90 kg·hm-2,manure N 65 kg·hm-2,P2O5 18 kg·hm-2,K2O 56 kg·hm-2,manure C 1 500 kg·hm-2~3 000 kg·hm-2,can enhance stably soil nutrition environment,increase soil organic maure,increase wheat yield.