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为了能解决土壤可溶性盐测定工作中经常会遇到的问题,采集了石河子大学现代节水灌溉兵团重点试验室土壤样品110个,系统研究了土壤可溶性盐含量与土壤浸出液电导率之间的关系,从5种函数模型中筛选出土壤浸出液电导率与其残渣烘干法可溶性盐含量之间的最优回归拟合方程y=0.071 2 x0.576 8;探究土壤浸出液电导率随其静置时间的变化规律,得出电导测定和残渣烘干法测定的准确静置时间。
In order to solve the problems often encountered in the determination of soil soluble salts, 110 soil samples from the Key Laboratory of Modern Irrigation Irrigation Corps of Shihezi University were collected. The relationship between soil soluble salt content and conductivity of soil leachate was systematically studied. From the five function models, the optimal regression fitting equation between the conductivity of soil leachate and the soluble salt content of residue drying method was screened out. Y = 0.071 2 x0.576 8; The change of conductivity of soil leachate with its standing time Law, derived conductivity determination and residue drying method to determine the exact time to rest.