【摘要】 通过对浙北杭(州)嘉(兴)湖(州)平原区富硒土壤的研究,发现区内富硒土壤环太湖周围不连续地分布,土壤硒全量主要在0.3～0.5 mg/kg,平均值为0.389 mg/kg,标准离差和变异系数分别为0.037和9.4%;土壤硒与土壤有机质关系密切(n=779,r=0.550),而与土壤pH不相关;土壤在有机质丰富和氧化条件下,农产品富硒效果好。在对富硒土壤成因进行深入研究的基础上,提出湖沼相富硒土壤新类型。更多还原

【Abstract】 Based on the study of selenium-rich soil in Hangjiahu Plain,the result showed that the selenium-rich soil distributed around the Tai Lake.The amount of soil selenium was from 0.3 to 0.5 mg/kg and its average,standard deviation and coefficient of variation were respectively 0.389 mg/kg,0.037 and 9.4%.The correlation analysis indicated that selenium was closely related to soil organic matter,(n = 779,r = 0.550),but it was not related to soil pH.The result of further study showed that the possibility of the agricultural products selenium-rich was high in the soil condition of rich in organic matter and reducing environment.Finally,based on the results of the study,limnetic facies type of selenium-rich soil was first put forward.更多还原