对银川平原灌淤土进行田间(500×70米)随机取样,测定土壤物理性状和颗粒组成.其测定值的分布类型检验结果说明,土壤性状不同,分布类型也不完全相同.对呈对数正态分布和偏态分布的土壤性状不宜采用正态处理,而应采用相应正确的分布类型特征参数,这样,可减小数值统计分析本身的误差,更准确地评价试验结果. Soil samples (500 × 70 m) were randomly sampled from the irrigated silts in the Yinchuan Plain to determine the physical properties and particle compositions of the soils. The test results of distribution types of the measured values ​​showed that the soil properties were different and the distribution types were not exactly the same. Normal distribution and skewed distribution of soil properties should not be normalized, but should use the appropriate distribution parameters of the appropriate characteristics, so that numerical statistical analysis can reduce the error itself, more accurately evaluate the test results.