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盆栽试验的结果表明：牛粪、泥炭对外源微量元素形态分配的影响总趋势是一致的；四种微量元素化学有效态的主要给源不完全相同，但主要是以交换态和松结合有机态为主；土壤中生物有效性Cu、Zn、Fe、Mn的影响因素比较复杂，可能与有机质对不同元素具有强弱不同的络合能力以及Fe、Mn元素自身的变价有关．
The results of pot experiment showed that the general trend of the effects of cow dung and peat on the distribution of exogenous trace elements was consistent. The main sources of the four trace elements were not identical, but mainly in the form of exchangeable and loosely bound organic The main influencing factors of bioavailability of Cu, Zn, Fe and Mn in soils are complex factors that may be related to the different complexation ability of organic matter to different elements and the price change of Fe and Mn themselves.