紫色土壤微生物种群和数量与烟草青枯病发生的关系研究

Microbial population and the relationship of tobacco bacterial wilt disease in purple soil

以南雄烟区的紫色土和沙泥田土为研究对象,探索不同土壤中微生物种群数量与烟草青枯病的关系,结果表明,紫色土壤中放线菌数量明显增多、青枯菌数量明显减少、青枯病发生轻,推测紫色土的抑病性可能与土壤放线菌数量增多有关。

In this paper we compared the microbial population and the relationship of tobacco bacterial wilt from purple soil and sand soil. The results showed that the number of aetinomycetes in purple soil was more than that in sand soil. In addition, the number of Ralstonia solanacearum and the tobacco bacterial wilt disease in the purple soil were fewer than that in the sand soil. So we speculated that disease suppression may be related to more actinomycetes in the purple soil.