摘要
为研究茶园土壤碳(C)、氮(N)、磷(P)、钾(K)含量及其生态化学计量比对土壤微生物群落结构的影响,以福建省福鼎市茶叶主产地茶园为研究对象,系统测定和分析土壤养分与计量比,分析其对细菌群落特征的影响。结果表明:(1)茶园土壤C、N、P、K含量均值分别为18.39,1.96,0.91,15.57 g/kg,土壤C∶N、C∶P、C∶K、N∶P、N∶K、P∶K均值分别为9.24,30.96,1.24,3.32,0.13,22.39;(2)土壤中的优势菌门为变形菌门(Proteobacteria)、酸杆菌门(Actinobacteria)、放线菌门(Acidobacteria);优势菌属为Paludibaculum、分枝杆菌属(Mycobacterium)、慢生根瘤菌属(Bradyrhizobium),不同茶园土壤中细菌群落组成及结构相似,但细菌多样性指数差异显著(p<0.05);(3)属水平上茶园土壤细菌与养分及其计量比的相关性分析结果显示,K与热脱硫弧菌属(Thermodesulfovibrio)、盖氏菌属(Gaiella)呈显著正相关(p<0.01),P与梭菌属(Clostridium)、罗思河小杆菌属(Rhodanobacter)、地杆菌属(Geobacter)呈显著正相关(p<0.01),而N与假单胞菌属(Pseudomonas)呈显著负相关(p<0.01),K与北孢里菌属(Kitasatospora)、苯基杆菌属(Phenylobacterium)呈显著负相关(p<0.01);土壤C∶N、C∶P、N∶P、P∶K与西索恩氏菌属(Chthoniobacter)、网团菌属(Dictyobacter)、伯克霍尔德菌属(Paraburkholderia)、芽孢杆菌属(Bacillus)呈显著正相关(p<0.05),与慢生根瘤菌属(Bradyrhizobium)、Vicinamibacter、盖氏菌属(Gaiella)、假单胞菌属(Pseudomonas)等呈显著负相关(p<0.001);(4)功能预测结果显示,茶园细菌的预测功能中以代谢活动为主的功能居多,对茶园土壤养分循环以及通过代谢活动提高土壤固碳效率有着积极作用。研究结果对基于养分管理的茶园土壤微生物多样性功能研究具有指导意义。
In order to study the effects of soil carbon(C),nitrogen(N),phosphorus(P),potassium(K)content and their eco stoichiometric ratio on soil microbial community structure,soil nutrient-to-metrological ratio and its influence on the characteristics of bacterial communities were systematically measured and analyzed by taking tea gardens in Fuding City,Fujian Province as the research object.The results showed that:(1)The mean contents of C,N,P and K in tea garden soil were 18.39,1.96,0.91,15.57 g/kg,and the mean values of soil C∶N,C∶P,C∶K,N∶P,N∶K,N∶K,were 9.24,61,1.24,3.32,0.13 and 22.39,respectively.(2)The dominant bacteria in the soil were Paludibaculum,Mycobacterium,and Acidobacteria;the dominant bacteria genera were Paludibaculum,Mycobacterium and Bradyrhizobium,and the composition and structure of bacterial communities in different tea plantations were similar,but the bacterial diversity index was significantly different(p<0.05).(3)The correlation analysis results of soil bacteria and nutrient and their measurement ratio in tea gardens at the genus level showed that K was significantly positively correlated with Thermodesulfovibrio and Gaiella(p<0.01),P was positively correlated with Clostridium,Rhodanobacter,and Geobacter(p<0.001),while N was significantly negatively correlated with Pseudomonas(p<0.01),K was significantly negatively correlated with Kitasatospora and Phenylobacterium(p<0.01).Soil C∶N,C∶P,N∶P,P∶K were significantly positively correlated with Chthoniobacter,Dictyobacter,Paraburkholderia,and Bacillus(p<0.05),and were negatively correlated with Bradyrhizobium,Vicinamibacter,Gaiella,and Pseudomonas(p<0.001).(4)The functional prediction results showed that most of the predicted functions of tea garden bacteria were mainly metabolic activities,which had a positive effect on soil nutrient cycling in tea gardens and improving soil carbon sequestration efficiency through metabolic activities.Therefore,this study is of great significance for the study of soil microbial diversity in tea gar
作者
杨发峻
王维奇
吴梓炜
许宏达
葛茂泉
林少颖
李先德
张永勋
吴传惠
YANG Fajun;WANG Weiqi;WU Ziwei;XU Hongda;GE Maoquan;LIN Shaoying;LI Xiande;ZHNAG Yongxun;WU Chuanhui(Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education,Fujian Normal University,Fuzhou 350117;Institute of Geographical Science,FujianNormalUniversity,Fuzhou 350117;Institute of Agricultural Economics and Development,Beijing 100081;Fujian Shun Mingdao Tea Industry Co.,Ltd.,Ningde,Fujian 355200)
出处
《水土保持学报》
CSCD
北大核心
2023年第6期209-218,共10页
Journal of Soil and Water Conservation
基金
国家自然科学基金面上项目(41571287)
福建福鼎白茶文化系统全球重要农业文化遗产申报项目(DH-1815)
农业农村部全球重要农业文化遗产申报与国际交流项目(12190036)。
