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1987～1989年的研究结果表明,西瓜蔓枯病菌〔Mycosphaerella melonis(Pass.)Chiu et Walker.〕在病残体上主要以菌丝体和子囊座形式越冬。处于稻田水中及土壤下 5～10 cm的病残体,3个月后失去传病作用,旱地土壤下 5～10 cm的病残体,经 6～9个月后也相继失去传病力,土表和地边草丛中的病残体,需经15～18个月才失去传病力,室内干藏病残体上的病菌则可存活24个月以上,26个月后完全失去生命力。土壤中的木霉(Trichoderma sp.)等可加速病残体上病菌的死亡。
The results from 1987 to 1989 showed that Mycosphaerella melonis (Pass.) Chiu et Walker. Was mainly overwintered in the form of mycelium and ascus stenosis. In the paddy field water and soil 5 ~ 10 cm of the diseased body, 3 months after the loss of transmission disease, dry soil 5 ~ 10 cm of the sick after 6 to 9 months have also lost their pathogenicity, Soil surface and the grass on the ground in the body of debris, after 15 to 18 months to lose the disease, the indoor dry disease on the sick can survive more than 24 months, 26 months after the total loss of vitality. Soil Trichoderma (Trichoderma sp.) Can speed up the death of pathogenic bacteria.