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添加外源铜条件下 ,土壤脲酶活性是土壤缓冲性及时间 2个因素的函数。土娄土、黑垆土脲酶活性与时间及土壤缓冲量之间的关系为二元线性回归方程。土娄土、黄绵土、黑垆土脲酶活性变化率与时间及土壤缓冲速率之间的方程为 :时间的非线性阻尼振动方程和土壤缓冲速率线性方程的复合形式。黄褐土脲酶活性变化率与时间及缓冲速率之间的关系为 :时间的三次抛物线方程与土壤缓冲速率的一元线性方程的复合形式。这组方程的建立 ,从理论上揭示出脲酶活性不仅能反映污灌土壤受污染的程度 (缓冲性大小 ) ,而且能反映出污灌土壤受污染过程 (时间的长短 )
Adding exogenous copper, the soil urease activity is a function of soil buffer and time 2 factors. The relationship between the soil urease activity and the time and the amount of soil buffer is the binary linear regression equation. The equations between the rate of change of soil urease activity and the time and soil buffer rate of soil loess, loessial soil and black sand soil are as follows: the nonlinear damping vibration equation of time and the compound form of linear equation of soil buffer velocity. The relationship between the rate of change of yellow brown soil urease activity and the time and the buffer rate is the complex form of the linear equation of the cubic parabola of time and the soil buffer rate. The establishment of this set of equations theoretically reveals that urease activity can not only reflect the degree of pollution (buffer size) of sewage irrigation soils, but also reflect the pollution process of sewage irrigation soil (the length of time)