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每年春夏之交,正值番茄处于开花之际,往往暴发青枯病,轻的年份损失2～4成。1986年福州地区因此病流行损失达八成以上。番茄青枯病是由青枯病菌(Pseudomonassolanacearum E.F.Smith)侵染引起的,病菌主要随残株遗留在土壤中越冬,并营腐生生活,能在土壤中存活14个月乃至6年之久。在寄主植物体内可活7个月。越冬病菌靠雨水和灌溉水,从寄主的根部或基部的伤口侵入。此外人畜、农具、带菌土壤、昆虫和线虫等也能传播引起重复侵染蔓延。
At the turn of spring and summer of each year, at the time when the tomato is in bloom, it often leaves a bacterial wilt. The light year lost 2 to 4 percent. In 1986, the epidemic loss in Fuzhou reached 80% or more. Tomato bacterial wilt is caused by the infection of Pseudomonas solanacearum E.F.Smith. The pathogen mainly lives in the soil with the stubble and lives in the soil for 14 months or even 6 years. In the host plant can live 7 months. Wintering pathogens rely on rain and irrigation water to invade from the wounds at the root or base of the host. In addition, people and livestock, farm tools, soil-borne, insects and nematodes can also spread caused repeated infections spread.