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对滇西南6个县土壤样品有效Fe、Mn、Cu和Zn的分布进行研究。结果表明:有效Fe在6个县都不缺乏;有效Mn陇川有88.89%的缺乏,盈江、新平、昌宁、云县和凤庆缺乏的分别占61.90%、40%、27.27%、20%和10%;有效Cu在凤庆、云县和昌宁三个县不缺,陇川、新平和盈江三个县缺乏的分别占的16.67%、30%和28.57%;有效Zn陇川和昌宁有80%以上的缺乏,盈江、新平、凤庆和云县缺乏的分别占66.67%、55%、10%和10%。相关性分析表明,相关分析结果表明,土壤pH值与所考察的所有微量元素有效量之间均呈负相关,pH与有效Zn极显著负相关(P<0.01),与有效Cu和Mn显著负相关(P<0.05)。有机质除与有效Zn显著负相关(P<0.05),与Cu、Mn和Fe之间的相关性不明显。
The available Fe, Mn, Cu and Zn distributions in soil samples from 6 counties in southwestern Yunnan were studied. The results showed that the available Fe was not lacking in all six counties, and the available Mn Longchuan was 88.89% deficient, accounting for 61.90%, 40%, 27.27% and 20% respectively of the deficiencies of Yingjiang, Xinping, Changning, Yunxian and Fengqing % And 10% respectively. Cu was not lacking in Fengqing, Yunxian and Changning counties, and 16.67%, 30% and 28.57% respectively in the three counties of Longchuan, Xinping and Yingjiang. Effective Zn Longchuan And Changning more than 80% of the lack of Yingjiang, Xinping, Fengqing and Yunxian lack of 66.67%, 55%, 10% and 10%. Correlation analysis showed that the correlation analysis showed that there was a negative correlation between soil pH and the effective amount of all the trace elements investigated, negatively correlated with pH and effective Zn (P <0.01), negatively correlated with available Cu and Mn Related (P <0.05). There was a significant negative correlation between organic matter and available Zn (P <0.05), and no obvious correlation with Cu, Mn and Fe.