For the tested acid soils, available Mn was divided into four chemical fractions which were readily soluble Mn> weakly absorbed Mn, specifically absorbed Mn and oxide Mn.
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- 對于供試酸性土壤來(lái)說(shuō)，有效錳分為易溶態(tài)錳、弱吸附態(tài)錳、專(zhuān)性吸附態(tài)錳和氧化錳四種化學(xué)形態(tài)，其中氧化錳和易溶態(tài)錳是其有效錳的主要存在形態(tài)(分別占有效錳總量的86.；4%25和7
