不同土壤培肥措施下农田有机物麦秸分解的数学模型研究

利用网袋法研究不同培肥措施和不同土壤生物对麦秸分解率的影响,并依据试验所得数据,采用DUD非线性数学模型的数据拟合方法,确立农田有机物分解的非线性数学模型。由拟合模型的回归平方和以及残差平方和可以看出,模型拟合精度很高,表明采用本研究中的非线性数学模型,可很好地描述农田有机物的分解情况。

Mathematical model of wheat straw decomposition rate in farmland with different levels of fertilization

The effect of fertilization levels and different soil organisms on the rate of wheat straw decomposition was studied by using the nylon bag method.Based on obtained data,a non-linear mathematical model of farm organic matter decomposition is developed using the data fitting method of DUD arithmetic.Regression square sum and residual square sum of the model indicate high fitting precisions,and an adopted nonlinear mathematical model completely depictes the nature of organic matter decomposition.It is a new and excellent method in the study of soil ecological system modeling and in rationally using organic offal.