樟茶间作对土壤养分及重金属含量的影响研究

Effect of Tea and Camphor Tree Intercropping on Soil Nutrients and Heavy Metals

为了揭示樟茶间作模式对土壤养分及土壤重金属元素含量的影响,以香樟间作茶园土壤为材料,以单作茶园土壤为对照,分析了土壤及茶叶样品营养元素和重金属元素含量。结果表明:与单作茶园相比,樟茶间作茶园土壤有机质含量增高,但土壤有效态养分含量降低;间作茶园土壤重金属元素含量明显降低,但茶叶新稍中重金属元素含量增加。樟茶间作模式推广中应特别重视茶园土壤重金属元素背景值,保障茶叶的绿色安全生产。

In order to reveal the effects of tea and camphor tree intercropping on soil nutrients and heavy metals, the levels of nutrients and heavy metals in the samples taken from tea and camphor tree intercropping garden contrast to simplex tea garden were analyzed. The results showed that in tea and camphor tree intercropping garden, contrast to simplex tea garden, the contents of soil organic matter increased but its available nutrients decreased. Meanwhile, the levels of heavy metals in soil decreased, but which in the shoots increased. The background values of soil heavy metals should be paid attention to in the extension of tea and camphor tree intercropping mode to ensure the quality safety in tea production.