Effects of different straw biochar combined with microbial inoculants on soil environment in pot experiment

Abstract Ginseng is an important cash crop. The long-term continuous cropping of ginseng causes the imbalance soil environment and exacerbation soil-borne diseases, which affects healthy development industry. In this study, was treated with microbial inocula using broad-spectrum biocontrol strain Frankia F1. Wheat straw, rice straw corn were best carrier materials for inoculum. After treatment inoculum prepared biochar, pH value, organic matter, total nitrogen, available phosphorus, potassium increased by 11.18%, 55.43%, 33.07%, 26.70%, 16.40%, 9.10%, activities urease, catalase sucrase 52.73%, 16.80% 43.80%, respectively. A Metagenomics showed that after application OTUs, Chao1 index, Shannon Simpson index 19.86%, 16.05%, 28.83%, 3.16%, Three classes ( Alphaproteobacteria, Gammaproteobacteria Sphingobacteria ) dominant bacteria in soil, their abundance 7.87%, 9.81% 1.24%, respectively, biochar. Results indicated most effective would be combined biochar