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:通过不同振荡时间、水土比、离子类型和含盐量 4个方面 ,分析电导法测定小泉子地区硫酸型盐渍土壤的全盐量与土壤浸出液电导率的相关性和回归关系。结果表明 :水土比 5∶1 ,土样振荡时间为 3、30、6 0 min,浸出液的电导率之间差异不显著 ;水土比 1∶ 1和 5∶ 1时 ,电导率与全盐量间相关性显著 ,根据本地区土壤特性 ,用水土比 5∶ 1为宜 ;当全盐量 <1 4 0 g/ kg时 ,用电导法测定本地区全盐量 ,建议一般选方程 Y=2 .96 8X- 0 .32 6 ,当全盐量较大时可用方程 Y=2 .0 88X+1 .989;SO42 -与电导率间的回归方程为 Y=3.397X+0 .5 0 4
: The correlation and regression relationship between the total salt content of sulphate-type saline soils and the conductivity of soil leachate were analyzed by conductivity method in four aspects of different shaking time, water-soil ratio, ion type and salt content. The results showed that when the ratio of water to soil was 5:1, the shaking time of soil sample was 3, 30 and 60 min, the difference between the conductivity of the leachate was not significant. When the ratio of water to soil was 1: 1 and 5: 1, The correlation is significant. According to the soil characteristics in this area, water-soil ratio is 5: 1. When the total salt content is <140 g / kg, the total salt content in this area is determined by conductivity method. 96 8X- 0 .32 6, the available equation Y = 2.08X + 1.989 when the total salt content is large, and the regression equation between SO42 - and conductivity is Y = 3.397X + 0.54