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在大田填埋试验资料的基础上,假定有机肥C/N随分解时间而变,其变化规律遵循一阶动力学方程,根据作物残体分解过程中C/N的变化及业已建成的作物残体有机碳分解动态模型,建立了有机肥氮素释放动态模型。分析结果表明,模型对于有机物料初始C/N和木质素含量有较强的敏感性。利用文献资料对所建模型进行了验证,结果表明,模型对大部分数据有较好的模拟效果。本模型可以为指导有机肥的合理施用提供依据。
Based on the data of landfill experiment, it is assumed that the C / N of organic manure varies with the decomposition time, and its variation follows the first-order kinetic equation. According to the change of C / N during the decomposition of crop residues and the residual crop residues Organic carbon decomposition dynamic model, established a dynamic model of organic fertilizer nitrogen release. The results show that the model has strong sensitivity to initial C / N and lignin content of organic materials. The established model is validated by literature data. The results show that the model has good simulation results for most of the data. This model can provide the basis for guiding the rational application of organic fertilizer.