Effect of inoculated peas with rhizobium on the number of pea rhizobacteria dynamic changes and yields

Rhizosphere bacteria dynamic changes and the relations between rhizosphere bacteria and yields were studied by root box method which divided stratifiedly the root system and soil at different distances from the root.The results show that: (1) Inoculated peas with better matching rhizobium can increase the rhizosphere bacteria of soil and yield of peas.Compared with CK treatment,the yield of peas in inoculated ACCC16103 increases by 30.6% and the number of pea rhizosphere bacteria increases by 117.5%.The number of rhizosphere bacteria is less than CK in flowering stage and seed pumping stage,but more than CK in mature stage and the yield of pea declines by 6.8%.(2) The rhizosphere bacteria shows obviously accumulated in root surface.(3) The number of pea rhizosphere bacteria in flowering stage is one of the main factors to determine the pea yield,and there is significantly positive correlation(r=0.768) between the number of pea rhizobacteria in flowering stage and pea yield,and there is positively correlation(r=0.4140) between the number of pea rhizobacteria in mature stage and pea yield,but does not reach significant level.