蚕豆根病病残体置于不同环境下,病原菌消减速度和致病性变异的程度不同:在模拟的大田浸泡和自然干湿交替系统中,菌群消减较置于室内干燥条件下快,其致病力与寄生阶段相比显著下降。病菌在蚕豆秸浸渍液中的繁殖量比在土壤浸渍液中大。除已知的初侵染源外,豆田稻茬也是这些病原菌的来源之一。 Vicia faba was placed in different environments, the degree of pathogenic bacteria reduction and pathogenic variation were different: in simulated field immersion and natural wet-dry alternation system, the flora reduction was faster than that under indoor dry conditions, Pathogenicity significantly decreased compared to the parasitic stage. Pathogen bacteria in Vicia faba dipping in breeding than in the soil immersion fluid. In addition to the known sources of primary infection, soybean stubble is also one of the sources of these pathogens.