Response of Soil Microbial Community Diversity to Long-Term Cultivation of Rice (Oryza sativa L.)/Cherry Tomato (Lycopersicon esculentum Mill.) in Rotation

The crop rotation periodicity has always been a concern of agricultural researchers. This study was the first investigation on effects long-term continuous cultivation with rice/cherry tomato soil microbial community diversity. main objective to analyze optimal years from micro-ecology perspective so as provide theoretical basis for effectively avoiding cropping obstacles cherry tomato. Soil samples were collected surface layers rotations 1 year (1a), 3 (3a), 5 (5a), 7 (7a) and 10 (10a). diversity determined via high-throughput sequencing. results showed that alpha communities highest at 5a then gradually decreased during 10a. Beta revealed structure significantly different among 1a, 3a 7a 10a, but there no clear differences 3a, 7a. abundances beneficial bacteria Gemmatimonadetes, Bacteroidetes, Chloroflexi, Nitrospirae fungi Mortierella, Trichoderma, Penicillium or Those pathogenic Fusarium Aspergillus lowest 7a, respectively. However, relative above-mentioned microorganisms began decline, while those increase after available phosphorus, iron zinc common important factors affecting fungi, indicated by significant positive correlations between environmental communities. In conclusion, decline micro-ecological balance broken continuously planting rotation, which would lead new obstacles.