福建南部丰产柑桔园土壤的微量元素含量

研究表明,福建南部丰产柑桔园土壤微量元素含量状况基本良好,其土壤有效态锌,铜、钼及代换态锰、水溶态硼含量明显高于我国红壤平均水平,且微量元素有效度较高。在土壤 pH3.6-8.0时。pH 值与代换态锰、有效态铜、铁含量呈显著或极显著负相关,与有效态钼,锌含量呈较显著或极显著正相关。本文初步提出闽南柑桔园土壤微量元素含量的适宜指标,可供土壤营养诊断之参考。

The Contents of Trace Elements in the Soil of Productive Citrus in South Fujian

The analysis results of the soil of productive citrus orchards in south Fujian indicated that the status of trace element contents was generally good.The contents of available Zn,Cu,Mo,exchangeable Mn, water-soluble B in the soil of productive citrus orchards were markedly higher than that in the red earth of China.The effective values of contents of trace elements were higher.When soil pH was 3.6-8.0,significant or very significant negative correlation were found between the contents of exchangeable Mn,available Cu, Fe and pH values in soil;however there was a relatively significant or very significant positive correlation be- tween the contents of available Mo,Zn and pH values in the soil.The preliminary studies suggests that the values of the optimum ranges of trace elements in the soil of citrus orchards in south Fujian may provide the parameters of nutrition diagnosis for the soil.