西藏察隅河谷土壤养分状况及宜茶性分析  

Evaluation of the Soil Nutrient Status and the Feasibility of Tea Planting in Zayu valley of Tibet

作　　者：杨爽 杨春蕾 田发益 何建清 李婉茹 YANG Shuang;YANG Chunlei;TIAN Fayi;HE Jianqing;LI Wanru(The Biology and Technique center,Tibet Agriculture&Animal Husbandry University,Nyingchi,Tibet,860000;Lhasa Agriculture&Animal Husbandry Bureau,Lhasa,851500,China)

机构地区：[1]西藏农牧学院生物技术中心,西藏林芝860000 [2]西藏拉萨市农牧局,西藏拉萨851500

出　　处：《高原农业》2019年第6期658-663,693,共7页Journal of Plateau Agriculture

摘　　要：对西藏察隅河谷土壤进行了调查,分析测定了34个样点的养分含量,从土壤养分角度评价该区是否适宜茶叶的种植,为政府决策提供依据。结果表明:西藏察隅河谷拟植茶区域91.2%的样地土壤pH处于适宜范围,土壤有机质、全氮、碱解氮、有效磷以及速效钾含量的平均值分别是39.24 g/kg、1.55 g/kg、146.08 mg/kg、28.55 mg/kg、115.49 mg/kg,对照优质、高效、高产茶园的土壤营养诊断指标,察隅县拟植茶土壤有机质、全氮、碱解氮含量丰富,速效磷、速效钾含量供应状况偏低。由于区域和海拔高度的差异较大,导致整个调查区域土壤有机质和氮磷钾养分含量的变异程度较大,因此在种植茶树时应根据具体情况进行因地制宜的合理施肥。The soil nutrient status of Zayu valley in Tibet was analyzed to evaluate whether this region was suitable for planting tea.The results showed that 91.2%of the soil pH was in the appropriate range,and the average content of soil organic matter(SOM),total nitrogen(TN),available nitrogen(AN),available phosphorus(AP)and available potassium(AK)were 39.2 g/kg,1.5g/kg,146.1 mg/kg,28.5 mg/kg and 115 mg/kg.Overall,the soils were rich in organic matter,total nitrogen,alkaline N,but were low in soil phosphorus and potassium content.Due to the differences of region and altitude,there was a greater variation in soil organic matter,nitrogen,phosphorus and potassium content.Therefore,reasonable fertilization depending on the local soil nutrient status is necessary for the cultivation of tea in this region.

关 键 词：西藏察隅 土壤养分状况 宜茶性 

分 类 号：S158[农业科学—土壤学]