西南林业大学学报2023，Vol.43Issue(11)：185-191,7.DOI:10.11929/j.swfu.202210016
不同土壤深度凤丹根际微生物碳源利用能力的研究
Effects of Soil Depth on Carbon Source Utilization Ability of Rhizosphere Microorganisms of Paeonia ostii
摘要
Abstract
Using Biolog-Eco technology,the bacterial community composition and diversity in the soil of different soil depths(0-20,20-40 cm and 40-60 cm)of Paeonia ostii cultivation were studied,the vertical distri-bution of bacterial carbon source metabolism ability and carbon source utilization mode in different soil layers were explored.The findings indicated that with the increase of soil depth,the average color change rate(AWCD)of P.ostii rhizosphere soil bacterial community showed a significant downward trend;Shannon index and Simpson index also showed a significant downward trend with the increase of different soil depths;the carbon source metabolic capacity of the bacterial community decreased significantly with the increase of different soil depths;carbohydrates,amino acids,carboxylic acids and amines were the main metabolic methods of the rhizo-sphere bacterial community;the rhizosphere soil bacteria at different soil depths were mainly affected by pH,SOC,TN and C/N.Therefore,the carbon source metabolism and functional diversity of soil bacteria in P.ostii at different depths have changed,and the types of carbon sources used by bacteria at different soil depths are also different.The physical and chemical properties of soil are responsible for the changes in bacterial functions at dif-ferent soil depths.关键词
凤丹/土壤/碳源/微生物/多样性Key words
Paeonia ostii/soil/carbon source/microbe/diversity分类
农业科技引用本文复制引用
周英,耿晓东,汪成忠..不同土壤深度凤丹根际微生物碳源利用能力的研究[J].西南林业大学学报,2023,43(11):185-191,7.基金项目
中央财政林业科技推广示范资金项目(Su[2021]TG09)资助 （Su[2021]TG09）
江苏省林业科技创新与推广项目(LYKJ[2020]27)资助. （LYKJ[2020]27）
