有机无机配施对土壤养分环境及小麦增产稳定性的影响

针对太行山山前平原生态类型区土壤有机质含量和土壤氮储量偏低,增产潜力下降和稳定性差等问题,在河北省辛集市马兰农场进行小麦培肥定位试验,研究化肥和有机肥配施对土壤有机质和NPK养分的影响。结果表明,化肥配合有机肥施用对土壤养分环境的培肥作用,优于化肥配合等养分含量的秸秆直接还田。相对不施肥的对照,不同肥力地块土壤有机质、全氮、碱解氮、全磷、有效磷、速效钾分别增加14.59%~19.2%、5.7%~14.81%、10.38%~24.30%、8.63%~10.89%、93.19%~107.24%、17.69%~55.18%,小麦产量增加75.64%~79.7%,增稳系数增加3.03~3.19。在太行山山前平原区,一般施用量在化肥N 210 kg.hm-2,P2O590 kg.hm-2,K2O 90 kg.hm-2,有机肥折合养分含量在N 65 kg.hm-2,P2O518 kg.hm-2,K2O 56 kg.hm-2,有机C量1 500~3 000 kg.hm-2,可达到稳定增进土壤氮磷钾养分环境,改善土壤有机质状况,稳定增加小麦产量的积极培肥作用。

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...