摘要
1983—1987年研究了几种不同施肥条件下农田土壤有机质的分解和积累状况,用Jenny模式对测定结果进行计算,预告了不同施肥制度下农田土壤有机碳含量变化可能趋近的平衡值以及达到预计平衡状态所需要的时间。结果表明,不同施肥制度对促进土壤有机质平衡的效果有差异。
The turnover and equilibrium of soil organic matter are apparently affected by ag practices under specified natural conditions. Usually it takes a long time to predict soil O. M. equilibrium state under successive growing system with different fertilizer treatments. Nevertheless by using H. Jenny equation, a calculation with the O. M. mineralization rate and accumulated O. M. quantity roughly can reflect the tendency of soil O. M. equilibrium, which may be used to assess the fertilization scheme, and to help improving the management of ag soil resource.
