西藏高原茶场茶园土壤肥力质量分析  

Assessment of Soil Fertility Quality for Plateau Tea-Garden in Tibet

作　　者：赵震虎[1] 张金萍[2] 刘宗勇 关法春 边步云 ZHAO Zhenhu;ZHANG Jinping;LIU Zongyong;GUAN Fachun;BIAN Buyun(Harbin Academy of Agricultural Sciences（HAAS）,Harbin Heilongjiang 150000,China;Songliao Water Resources Commit,MWR,Changchun Jilin 130021,China;Mianyang Academy of Agricultural Sciences Mianyang Sichuan 621023,China;Jilin Academy of Agricultural Sciences,Changchun Jilin 130124,China;Station of Agro-ecology Research on Agro-pastoral lntegration（Nyingchi）,Nyingchi Tibet 860000,China;Department of Plant Science,Tibet Agriculture and Animal Husbandry University,Nyingchi Tibet,860000,China)

机构地区：[1]哈尔滨市农业科学院,黑龙江哈尔滨150000 [2]水利部松辽水利委员会规研中心,吉林长春130021 [3]绵阳市农业科学研究院,四川绵阳621023 [4]吉林省农业科学院,吉林长春130124 [5]"农牧一体化"农业生态试验站(林芝),西藏林芝860000 [6]西藏农牧学院植物科学学院,西藏林芝860000

出　　处：《高原农业》2017年第1期33-37,共5页Journal of Plateau Agriculture

基　　金：西藏特色农牧资源研发协同创新中心高原生态研究平台;西藏(大学)农牧学院青年拔尖人才支持计划项目(2015D0601)资助

摘　　要：针对以往茶园土壤肥力质量综合评价方法存在人为权重赋值误差,以及简便计算等方面的问题,提出了投影寻踪等级评价模型对土壤肥力质量进行综合评价。该方法依据标准样本自身的数据特性寻求最佳投影方向,通过最佳投影方向与评价指标的线性投影得到投影指标值,依据投影指标值对样本进行统一评价和分类,并利用最佳投影方向判断各评价指标对综合评价目标的贡献大小。应用该模型较好地对西藏易贡茶场土壤肥力质量进行客观的综合评价,西藏易贡茶场土壤肥力质量等级为Ⅳ级,并对单一指标对土壤肥力质量贡献大小进行了分析,其土壤中K元素最为缺乏,该评价结果与实际情况相吻合,而且评价分析结果更加精确合理,适合用茶园土壤肥力质量的综合评价。In this study, projection pursuit grade evaluation （or PPE for short） model was applied in the assessment of soil fertility quality in the tea garden of Yi-Gong in Tibet. Comparing with traditional assessments, this method has advantages of efficient simulation and non-human factors. By projecting high dimensional data to low dimensional space and then finding the optimum projection vector of data in one-dimensional space, projection pursuit is an effective method in comprehensive and multi-index evaluation. The projection assessment indices＇ contributions towards the comprehensive assessment objective are determined by the best direction of projection. Taking the protected vegeTab, soil of the tea garden in Tibet District as study area, we assessed local soil fertility quality and analyzed the contribution values of soil fertility quality indices with PPE approach. Through analyses, we found that the grade of soilfertility quality was IV, which was lower, and the element K was the key lack, The PPE model, which was more precise and reasonable, had better applicability for the soil fertility quality assessment in tea garden.

关 键 词：茶园 投影寻踪 土壤肥力质量 评价 

分 类 号：S151.9[农业科学—土壤学]