关键词: 福建南亚热带, 果园土壤, 微量元素, 有效态含量, 适宜指标

Abstract: The analysis results of the soil of productive orchards in south subtropi cal zone of Fujian indicated that the status of trace element contents in citrus orchardsoil was generally good,while that of longan and litchi orchard soil was relatively unbalanced. The available contents of some trace elements (Mn,B,Cu,Mo) in the soil ofdifferent fruit species orchards or different site of orchards within the same fruit specieswere lower,When soil pH was 3.60~8.76, the regular correlations were found betweenpH values and available contents of most trace elements in soil;there were unsteadv correlations,however,between pH values and available contents of a few trace elements insoil.The preliminary studies suggest the values of the optimum ranges of available contents of trace elements in the soil of citrus,longan and litchi orchards in south subtropi-cal zone in Fujian,These indexes may provide the references of nutrition diagnosis forthe orchard soil.

Key words: South subtropical zone of Fujian, Orchard soil, Trace element, Avai lable content, Optimum index