有机无机肥料配合施用对草甸暗棕壤有机质含量及作物产量的影响

经过20年长期定位试验,研究施用不同种类肥料对草甸暗棕壤有机质含量及作物产量的影响。结果表明:长期不施肥使土壤有机质含量持续下降;长期单施NP化肥能有效缓解有机质含量下降的趋势;长期单施有机肥以及有机、无机肥料配合施用能有效地提高土壤有机质的含量。尤其是有机、无机肥料配合施用不仅能有效提高土壤有机质的含量,并且在产量上较无肥及单施肥料的处理有明显的增产效果。

Effect of Organic and Inorganic Fertilizer on Crop Yield and Organic Matter Content in the Grass Dark Brown Soil

Through 2 decade fixed position experiment, the influence of organic fertilizer and inorganic fertilizer on crop yield and the organic matter content in the grass dark brown soil was studied,The results showed: Soil organic matter content descended Continuously not to use fertilizer over a long period of time , dressing NP fertilizer long-term could effectively alleviate the organic matter content to descend, dressing organic fertilizer single long-term,and organic fertilizer with inorganic fertilizer could increase the soil organic matter content. dressing organic and inorganic fertilizer could not only increases the soil organic matter content effectively, but also could increase yield obviously against no fertilizer.