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作 者:张习敏[1,2] 申刚[1,2] 张宇斌[1,2] 陈玲[1,2] 洪鲲[1,2] 乙引[1,2]
机构地区:[1]贵州师范大学生命科学学院,贵州贵阳550001 [2]贵州省植物生理与发育调控重点实验室,贵州贵阳550001
出 处:《贵州农业科学》2015年第6期87-91,共5页Guizhou Agricultural Sciences
基 金:贵州茅台科技联合基金项目"茅台酒生态功能区植物生理代谢多样性功能研究"[黔科合茅科联字(7006)];贵州省重点实验室建设项目"贵州省植物生理与发育调控重点实验室"[黔科合计Z字(2011)4005]
摘 要:为阐明茅台酒厂生态功能区优势植物体内主要营养元素含量与土壤微生物及理化性质的关系,分别测定该地区优势植物根、茎和叶大量矿质元素含量、土壤微生物数量和土壤理化性质的相关指标,并分析其相关关系。结果表明:6种植物的根、茎和叶片中N、P、K、Ca和Mg的含量基本为叶片含量最高、根部含量最低。三叶鬼针草(Bidens pilosa)叶片中P、K、Ca和Mg含量最高,分别为2.35g/kg、22.93g/kg、31.80g/kg和9.81g/kg;复羽叶栾树(Koelreuteria bipinnata)叶片N含量最高(3.63%);3个样地中,上游土壤容重、土壤pH和土壤比重比中游和下游低,而有机质较则较高;中游土壤微生物总数最高,约为6×104个。相关分析表明,N、P、K、Ca、Mg含量均与土壤容重、pH、比重和放线菌呈正相关,土壤矿质元素含量与有机质和真菌数量呈负相关性。结论:该地区优势植物体内大量元素的含量受土壤理化性质和微生物的影响。To explain the relationship between mineral elements contents and microorganisms,physical and chemical properties in soil of dominant species in Maotai liquor production area,mineral elements content,microorganisms and physical and chemical properties were measured respectively and their correlations were analyzed.Results:The content of N,P,K,Ca,and Mg in roots,stems,and leaves for six species were the highest in leaves and lowest in roots basically.The contents of P,K,Ca,and Mg in leaves of Bidens pilosa were the highest(2.35 g/kg,22.93 g/kg,31.80 g/kg,and 9.81g/kg,respectively).And the content of N in leaves of Koelreuteriabipinnata was the highest(3.63%).Among the three spots,the bulk density of soil,the pH of soil,and specific weight of soil were lower in upperspots than that of middle-and lower-spots.In contrast,the total amounts of microorganism were the highest in middle-spots(6×10^4 individuals).The content of N,P,K,Ca,and Mg was of positive correlation with the bulk density of soil,the pH of soil,specific weight of soil,and amount of actinomycetes.The contents of mineral elements were of negative correlation with organic matter and amount of fungus.Conclusion:The elements content of dominant species in the area were affected by physical and chemical properties and microorganisms.
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