有机肥与化肥配施对土壤养分的影响研究

Inluence of Organic Manure and Chemical Fertilizer on Soil Nutrients

不同有机肥与化肥配施比例都有促进土壤养分含量的作用,土壤中有机质、碱解氮、速效磷和速效钾含量均随有机肥在肥料中比例的增加而增加,增幅分别为1.04%~63.49%、5.57%~24.50%、28.65%~48.42%、16.7%~28.65%。有机肥与化肥配施能够明显改善土壤理化性质,降低土壤p H值和土壤容重,提高土壤总孔隙度,提高土壤有机质、碱解氮、速效磷、速效钾的含量,表明有机肥与化肥配施对土壤养分的提高效果明显,并明显高于单施化肥和不施肥。综合分析,有机肥与化肥配施比例为7∶3是值得推广应用的优化方案。

Different organic manure and chemical fertilizer has a role to promote soil nutrient content ratio, the content of soil organic matter, available nitrogen, available p and available potassium were increased with the increase in the proportion of organic manure and chemical fertilizer, the increase amplitudes are 1.04% -63.49% 5.57% 24. 50% ,28.65% ~ 48.42% , 16. 7% ~ 28.65%. Different organic fertilizer and chemical fertilizer proportion can obviouse improve soil property, reduce soil PH value and soil bulk density, improve soil total porosity, increase soil organic matter, the content of N, P and K, and it show that Creole organic fertilizer and chemical fertilizer can obvious enhance the effect of soil nutrients, And obvious higher than chemical fertilizer only and no fertilizer. Composite analyze , the combined application of organic fertilizer and chemical fertilizer ratio of 7 ： 3 worth apply optimization.