核农学报2018，Vol.32Issue(6)：1186-1194,9.DOI:10.11869/j.issn.100-8551.2018.06.1186
马铃薯间作栽培对土壤微生物群落结构与功能的影响
Effect of Different Intercropping Cultivation Patterns of Potato on the Structure and Function of Soil Microorganism Community
摘要
Abstract
In order to reveal the influence mechanism of crop interspecific interactions to soil microorganisms,the change of the soil microbial community structure and function of potato intercropped with the faba-bean or the buckwheat were studied by phospholipid fatty acids (PLFA) and Biolog Eco-plate after two-years,by means of the fixed experiment.The main results are as follows:compared with the monoculture,the potato intercropped with the faba-bean or the buckwheat influenced the structure diversity of soil microbial community,but also increased the biomass of soil bacteria and actinomycetes and the ratio of the biomass of gram positive bacteria and gram negative bacteria.Compared with the potato intercropping the faba-bean,the average well color development (AWCD) of the potato intercropping with buckwheat were enhanced and the ability of the carbon source utilization were increased by soil microbial communities,too.Compared with the potato monoculture,the richness and evenness of soil microbial community of the potato intercropped with the faba-bean were decreased by 35.6％ and 47.0％,respectively,but the dominance index were increased by 2.07 times.In addition,the richness index of soil microbial community of the potato intercropped with the buckwheat were decreased by 13.7％.The evenness and dominance index were increased by 8.8％ and 3.4％,respectively.The result of the multivariate analysis (RDA) showed that there was a good correlationship between the soil microbial community structure,the functional diversity and the soil nutrient content under intercropping system.The results showed that the soil micro-ecological environment were changed in the different potato intercropping system and the structure,the functional diversity of the soil microbial community were also influenced.The research results can provide the scientific basis for the reasonable crops intercropped with the potato in southern mountain areas of Ningxia.关键词
间作/微生物群落结构/AWCD/碳源利用/多样性指数Key words
intercropping/microbial community structure/average well color development (AWCD)/the utilization ability of carbon source/diversity index引用本文复制引用
刘亚军,马琨,李越,杜春凤,李倩,李贺,马玲,汪春明..马铃薯间作栽培对土壤微生物群落结构与功能的影响[J].核农学报,2018,32(6):1186-1194,9.基金项目
宁夏自然科学基金重点项目(NZ1602),国家自然科学基金(31660132、31160104),宁夏高等学校一流学科建设项目(NXYLX2017B05) （NZ1602）
