【摘要】 对1983年冬栽、1984年春栽冬小麦盆栽汞污染试验的部份结果,进行系统分析与模拟,充分估算土壤—作物系统与环境间污染汞的交换量,计算出实际参与系统内部运动的污染汞量,输入计算机同时计算配合十个函数方程,通过标准差、相关系数与显著性测验值的比较,迅速、准确地选出污染汞在系统内运动的数学模型,提高了模拟精度。用关联度分析方法可克服回归分析中的某些困难,较容易地判断出污染汞,籽粒产量,土壤性质与受污染部位的汞量之间的主次关系。更多还原

【Abstract】 An experiment on mercury pollution was carried out with pot-grown wheat. The Corrected data accordine to the system analysis were put into a computer and fitted with the following ten equations: Y=a+bx;Y=1/（a+bx） （Y=a/（b+x））;Y=1/a+be^-x;Y=a+blnx;Y=x/a+bx;Y=ax/b+x;Y=ax^b; Y=axe^bx;Y=ae^bx（Y=ab^x）;and Y=ae^-b/x(Y=ab^-1/x). Then the best mathematical moded for the minimal S.D（standard devia- tion）and the maximal C.C（correlation coefficient）and the maximal S.L （significant level）could be easily selected to simulate the process of mer- cury pollution in soil-wheat system.When the total amount of mercury pollution of soil,the quantity of pollution mercury through soil,the quantity of poullution mercury through root system,the quantity of poullution mer- cury through stem and leaf and the quantity of pollution mercury to enter into seed are expeessed by x0,x1,x2,x3,x4 respectively,then the move- ment of the pollution mercury among them could be respectively expressed as:x₁=a₁e^-b₁/x₀;x₂=a₂+b₂x₁;X₃=a₃+b₃x₂ and x₄=a₄e^-b₄/x.更多还原