光照驱动花生间作系统根际细菌群落结构演变和产量提升机制的研究  

Light-driven Succession of Rhizosphere Bacterial Community Structure and Yield Enhancement Mechanism in Peanut Intercropping System

作　　者：卢居勐 陈晏[1] 沈一[3] 何港辉 李世文 孙波[1] LU Jumeng;CHEN Yan;SHEN Yi;HE Ganghui;LI Shiwen;SUN Bo(State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Industrial Crops,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China)

机构地区：[1]土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京210008 [2]中国科学院大学,北京100049 [3]江苏省农业科学院经济作物研究所,南京210014 [4]江西农业大学国土资源与环境学院,南昌330045

出　　处：《土壤》2023年第6期1237-1243,共7页Soils

基　　金：中国科学院南京土壤研究所十四五自主部署项目(ISSASIP2211);国家重点研发计划项目(2022YFD1900600);国家自然科学基金面上项目(41977098)资助。

摘　　要：为探明间作体系中光照条件对矮杆作物产量及根际微生物群落影响的因果关系,依托江苏省农业科学院玉米/花生间作长期试验平台,通过带状间作行朝向设置低光与高光条件,利用同位素标记和高通量测序技术,研究了不同光照条件下矮杆花生根际光合碳分泌对根际细菌群落结构及作物产量的影响。结果表明:①提高花生冠层光截获增加了花生根际光合碳分配;②光照条件差异引起了花生根际细菌群落结构及关键细菌类群变化;③高光照条件通过改变间作花生根际功能细菌群落提升花生产量。研究结果为优化间作种植管理措施,增加高矮作物间作体系产量提供了新思路。To investigate the causal relationship of light condition on the yield of short crops and the rhizosphere microbial community in the intercropping system,in this study,based on the long-term experiment platform of maize/peanut intercropping in the Jiangsu Academy of Agricultural Sciences,the low light and high light conditions were designed,isotope labeling and high-throughput sequencing technology were used to study the effects of photosynthesized carbon excrete in the rhizosphere of short peanut on the rhizosphere bacterial community structures and crop yields under different light conditions.The results showed that:1)Increasing the light interception of peanut canopy increased the allocation of photosynthetic carbon in peanut rhizosphere;2)The difference in light condition caused changes in the bacterial community structure and key bacterial groups in peanut rhizosphere;3)High light condition changed the intercropping peanut rhizosphere functional bacterial community to increase peanut production.The research results provide new perspective for optimizing intercropping management measures and increasing the yield of tall and short crop intercropping systems.

关 键 词：花生产量 光截获 光合碳 细菌群落 关键菌群 

分 类 号：S154.4[农业科学—土壤学]