【摘要】 有机质与土壤肥力的关系极为密切。本文对朝阳地区主要耕地土壤的有机质含量与土壤常年产量的关系,耕地土壤的适宜有机质含量,低产、中产、高产土壤的有机质矿化率和年矿化量,有机肥料在低产、中产、高产土壤中的腐殖化系数分别作了研究,初步得到了有关指标和数据。根据试验结果,可以作为朝阳地区对有关土类指导合理施用有机肥料,保持耕地土壤有机质平衡的参考。更多还原

【Abstract】 Soil organic matter content has a close relation with soil fertility. In this study, the relation ships between soil organic matter contents and soil average productivity, the optimum contents of organic matter in arable soils, and the mineralization rates of organic matter and the huminifisca- tion coefficients of various organic materials in soils with different fertil- ity levels were studied. Some preliminary relevant indices and data were obtained. These results might provide some refenences to the reasonable application of organic manures for maintaining and increasing the levels of soil organic matter in brown soils and aquo-brown soils in the District of Chaoyang.更多还原