Effects of Rape Varietieson soil Physicochemical Properties and Microbial Diversity in Saline-Alkali Land in Xinjiang

【Objective】 In order to screen out the most suitable rape variety for planting in the saline-alkali soil in Xinjiang, a micro-area experiment was carried out to study the effects of four rape varieties (Rape variety 1, 16-P22Wai, Hua 5 and Jinyou 158) on the microbal community structure and microbal diversity and soil physicochemical properties in saline-alkali soil. 【Method】 The microbal community structure and microbal diversity were analyzed by using Illumia Miseq high-throughput sequencing technology. 【Result】 The results showed that 16-P22Wai could significantly reduce the pH of the soil and increase its alkali-hydrolyzable N, available P and organic matter (P<0.05). There was no significant difference in microbial community richness among soil samples, and the maximum diversity index of microbial community was 1. Proteobacteria, Actinobacteria, Acidobacteria and Chloroflexi were the dominant populations in soil of different rape varieties and the order of relative richness of Pontibacter was as follows: (from big to small) 16-P22Wai > Rape variety 1 >Jinyou158 > Hua 5; The principal component analysis showed 16-P22Wai and Hua 5 had the highest similarity between 16-P22Wai and Hua 5; There was a significant correlation between the distribution of soil bacterial community and the distribution of soil alkaline hydrolyzed N and available P. 【Conclusion】 The rape variety of 16-P22Wai is more suitable for planting in saline-alkali soil for promoting the formation of dominant flora the area.