CAJ | 학술논문

实地采样测定了云南省茶叶主产区西双版纳、普洱、临沧和保山等地区中低产茶园土壤有机质、氮、磷、钾和重金属元素等的含量。结果表明：其土壤有机质平均含量为38．53 g／kg；全氮、全磷、全钾的平均含量分别为1．72、0．55、12．93 g／kg，碱解氮、速效磷、速效钾的平均含量分别为137．43、5．81、79．1 mg／kg，三大营养元素均存在不同程度的缺乏，特别是磷、钾元素成为茶园土壤养分供应的主要限制因子，建议在茶园中适当施用磷钾肥；少部分茶园铬、铅、镉、汞的含量超标，建议在茶园管理中注意所使用肥料、农药中重金属元素的含量。
실지채양측정료운남성다협주산구서쌍판납、보이、림창화보산등지구중저산다완토양유궤질、담、린、갑화중금속원소등적함량。결과표명：기토양유궤질평균함량위38．53 g／kg；전담、전린、전갑적평균함량분별위1．72、0．55、12．93 g／kg，감해담、속효린、속효갑적평균함량분별위137．43、5．81、79．1 mg／kg，삼대영양원소균존재불동정도적결핍，특별시린、갑원소성위다완토양양분공응적주요한제인자，건의재다완중괄당시용린갑비；소부분다완락、연、력、홍적함량초표，건의재다완관리중주의소사용비료、농약중중금속원소적함량。
The content of organic matter,nitrogen,phosphorous,potassium and heavy metals in soil of the middle -and low -yielding tea plantations in main production areas such as Xishuangbanna,Puer,Lin-cang and Baoshan of Yunnan Province.The results showed that the average soil organic matter was 38.53 g/kg.The contents of total nitrogen,total phosphorous and total potassium were 1.72,0.55 and 12.93 g/kg respectively.The average contents of alkali -hydrolyzable nitrogen,available phosphorus and available potas-sium were 137.43,5.81 and 79.1 mg/kg respectively.Nitrogen,phosphorous and potassium were lack in dif-ferent degrees in every region,especially phosphorous and potassium.The phosphorous and potassium were suggested to be applied properly in tea gardens.As the contents of chromium,lead,cadmium and mercury were over standard,the heavy metal content in fertilizers and pesticides should be paid attention to in tea gar-den management.