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白菜軟腐細菌(Erwinia aroideae)在不灭菌的土壤中可以存活11天至14天。土壤中的微生物总数(指可以在牛肉汁(月柬)培养基上发育的微生物)因軟腐細菌的加入而起剧烈的波动。当軟腐細菌进入土壤中后24小时,軟腐細菌的数量銳减而土壤中的其他微生物数量上昇,以后亦逐漸递減。当軟腐細菌在土壤中消失时,土壤微生物的数量又趋于平稳。軟腐細菌在栽有白菜的土壤中,土壤温度影响其存活期:土温在35℃时可以存活11天,在10℃可以存活21天,在20℃时可以活7天。豆餅及大粪干施入土壤中时可以促进軟腐細菌的消灭。施豆餅区(豆餅微粒与土壤拌匀)在24小时中软腐細菌即已消灭,而在施大粪干区軟腐細菌可以存活5天。軟腐細菌在灭菌的土壤中可以活96天,如果施以灭菌的堆肥或厩肥时,可以延长至180天以上。
Erwinia aroideae can survive from 11 days to 14 days in non-sterile soil. The total number of microorganisms in the soil, which means microorganisms that can develop on the beef juice medium, fluctuates violently due to the addition of soft rot bacteria. Twenty-four hours after the soft-rot bacteria entered the soil, the number of soft-rot bacteria dropped sharply and the number of other microbes in the soil increased, gradually declining thereafter. When the soft-rot bacteria disappear in the soil, the amount of soil microbes tends to be stable. Soft-rot bacteria In soils planted with cabbage, soil temperature affects their survival: Soil temperature can survive for 11 days at 35 ° C, 21 days at 10 ° C, and 7 days at 20 ° C. Soybean cakes and dung can be applied to the soil to promote the elimination of soft-rot bacteria. Shi bean cake area (bean cake particles and soil mix well) in 24 hours in the soft-rot bacteria that have been eliminated, and in the large dung dry area of soft-rot bacteria can survive for 5 days. Soft-rot bacteria can survive 96 days in sterilized soil and can be extended to over 180 days if sterilized compost or manure is applied.