久安古茶树的伴生植物及其土壤条件

Investigation of the Accompanying Plants and Soil Conditions of Jiuan Ancient Tea Trees

为了解久安古茶树的立地条件,对久安古茶树生长周围的伴生植物及其立地土壤条件等进行了调查。结果表明:久安古茶树生长在低纬度、高海拔、寡日照、多云雾的特殊环境条件下,其伴生植物丰富,尤以草本植物居多。古茶树生长地土壤以石英砂岩发育的硅铝质黄壤分布最广,多为黄沙土、黄泥土和黄沙泥土,土壤呈酸性,pH平均为4.40,有机质、速效钾含量极丰富,全氮、碱解氮、交换性钙、交换性镁、有效锌、有效锰含量丰富,全磷、速效磷、有效铜和有效铁含量比较缺乏。

In order to understand the site condition, the accompanying plants and soil conditions of ancient tea trees grown in Jiuan Township were investigated. The results showed that Jiuan ancient tea trees grown in low-latitude, high altitude, widowed sunshine and multi-cloud environmental conditions. The accompanying plants with ancient tea trees were rich; especially the herbaceous species. The sial yellow soil developed from quartz sandstone had the widest distribution, most of which were yellow sand soil, yellow clay soil and sand soil. the soil was acidic, the average soil pH was 4.40. The organic matter and available potassium was very rich in the soil. The content of total nitrogen, available nitrogen, exchangeable Ca, exchangeable Mg, available Zn and available Mn was rich, but the contents of total phosphorus, available phosphorus,available Cu and available Fe were deficient.