桂西北喀斯特地区漾濞泡核桃林地土壤与叶片养分化学计量特征  

Soil and leaf nutrient stoichiometry characteristics of walnut forest in Juglans sigillata,karst area of northwest Guangxi

作　　者：莫维维 韦建圩 梁嘉玲 刘易 谢伟东[1] 任哲 MO Weiwei;WEI Jianxu;LIANG Jialing;LIU Yi;XIE Weidong;REN Zhe(College of Forestry,Guangxi University,Nanning 530004,Guangxi,China;Jinchengjiang District Forestry Bureau of Hechi city,Jinchengjiang 547099,Guangxi,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]河池市金城江区林业局,广西河池547099

出　　处：《经济林研究》2022年第1期26-35,共10页Non-wood Forest Research

基　　金：国家自然科学基金项目(20120614);广西自然科学基金项目(0832030)。

摘　　要：【目的】了解桂西北喀斯特地区不同类型土壤与引种漾濞泡核桃的养分供需关系以及土壤养分限制状况,为当地漾濞泡核桃的科学管理、果实产量和品质提升提供理论参考。【方法】选取广西河池市6个县(区)30个漾濞泡核桃样地为研究对象,分析不同类型土壤和漾濞泡核桃叶片的养分含量和化学计量比及其相关性。【结果】土壤ω(P)由大到小依次为红色石灰土、黑色石灰土、黄色石灰土,红色石灰土与黄色石灰土间ω(P)的差异显著(P<0.05)。土壤ω(C)、ω(N)由大到小依次为红色石灰土、黄色石灰土、黑色石灰土,无显著差异(P>0.05)。土壤ω(C)∶ω(N)由大到小依次为红色石灰土、黑色石灰土、黄色石灰土,土壤ω(C)∶ω(P)、ω(N)∶ω(P)由大到小依次均为黄色石灰土、红色石灰土、黑色石灰土,均无显著差异(P>0.05)。漾濞泡核桃叶片ω(C)由大到小依次为红色石灰土、黑色石灰土、黄色石灰土,ω(N)由大到小依次为黑色石灰土、黄色石灰土、红色石灰土,ω(P)由大到小依次为黑色石灰土、红色石灰土、黄色石灰土,均无显著差异(P>0.05)。3种类型土壤漾濞泡核桃叶片ω(C)∶ω(N)、ω(C)∶ω(P)由大到小依次均为红色石灰土、黄色石灰土、黑色石灰土,无显著差异(P>0.05),叶片ω(N)∶ω(P)由大到小依次为黄色石灰土、黑色石灰土、红色石灰土,黄色石灰土样地与红色石灰土、黑色石灰土样地的漾濞泡核桃叶片ω(N)∶ω(P)间存在显著差异(P<0.05)。土壤ω(C)与叶片ω(C)正相关或极显著正相关,土壤ω(C)、ω(N)与叶片ω(P)正相关或极显著正相关,土壤ω(N)与叶片ω(N)负相关或显著负相关;黄色石灰土样地的土壤ω(N)、ω(P)与叶片ω(C)∶ω(N)、ω(N)∶ω(P)正相关或极显著正相关,土壤ω(C)∶ω(P)、ω(N)∶ω(P)与叶片ω(C)∶ω(N)、ω(C)∶ω(P)正相关或极显著正相关,红色石灰土样地与黑色石灰土样地的结果相反【Objective】In order to understand the nutrient supply and demand relationship between different types of soil and introduced Juglans sigillata in karst area of northwest Guangxi,as well as the nutrient limitation of soil,and provide theoretical reference for scientific management,fruit yield and quality improvement of J.sigillata.【Method】A total of 30 samples of J.regia in six counties(districts)of Hechi city,Guangxi were selected as the research objects,and the nutrient content,ecological stoichiometric ration of different types of soil and J.regia leaves and their correlation were analyzed.【Result】The soilω(P)from large to small was red calcareous soil,black calcareous soil and yellow calcareous soil,and the difference ofω(P)between red calcareous soil and yellow calcareous soil was significant(P>0.05).Soilω(C):ω(N)from large to small were red calcareous soil,black calcareous soil,yellow calcareous soil,and soilω(C):ω(P),ω(N):ω(P)from large to small were yellow calcareous soil,red calcareous soil,black calcareous soil,with no significant difference(P>0.05).The order ofω(C)from large to small was red lime soil,black lime soil,yellow lime soil,ω(N)from large to small was black lime soil,yellow lime soil,red lime soil,ω(P)from large to small was black lime soil,red lime soil,yellow lime soil,there was no significant difference(P>0.05).The leafω(C):ω(N)andω(C):ω(P)of J.sigillatain the three soil types of walnut from large to small were red lime soil,yellow lime soil,black lime soil,with no significant difference(P>0.05).The leafω(N):ω(P)from large to small was yellow lime soil,black lime soil,red lime soil,with significantly different(P<0.05)among the leafω(N):ω(P)of J.regia in yellow lime soil,red lime soil and black lime soil(P<0.05).Soil C was positively or extremely significantly positively correlated with leafω(C),soilω(C)andω(N)were positively correlated or extremely significantly positively correlated with leafω(P),and soilω(N)was negatively correlated or significantly cor

关 键 词：桂西北 喀斯特 土壤养分 化学计量 

分 类 号：S664.1[农业科学—果树学]