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1990～1992年,作者对梅花炭疽病(Colletotrichum mume Hori)进行了病菌分离、接种及其生物学特性测定、发病规律观察和药剂筛选试验,结果表明,此病菌不论进行有伤接种或无伤接种均能致病,该病菌生长的最适温度为23～25℃,最适pH值为6.5,分生孢子萌发的最适温度为22～25℃,高于35℃或低于10℃时不能萌发。病菌以分生孢子和菌丝状态在叶片和嫩梢的病斑内越冬,病菌和初次侵染为4月中旬,病害发生期为4～9月,每年有2～3个发病高峰期;病害的发生与温度、湿度、降雨量和雨日有关,雨量大、雨日长发病重;受害程度与品种有关,一般花梅比果梅严重。药剂试验表明,百菌清、代森锰锌、三唑酮各1000倍液,对该病菌有明显的抑菌效果,抑菌率在90%以上。
From 1990 to 1992, the authors studied the isolation, inoculation and biological characteristics of Colletotrichum mume Hori and the observation of its pathogenesis and drug screening tests. The results showed that both the pathogen inoculation and non-injury inoculation The optimum temperature for the growth of the bacteria was 23-25 ℃, the optimum pH was 6.5, the optimum temperature for conidiospore germination was 22-25 ℃, and the optimum temperature for conidiospores was not higher than 35 ℃ or lower than 10 ℃ Germination. The pathogen of conidia and mycelia in the leaf and tip of the winter disease, the initial infection and bacteria for the mid-April, the disease period of 4 to 9 months, each year there are 2 to 3 peak incidence; disease Occurred with the temperature, humidity, rainfall and rainy days, rainfall, heavy rainy days; the degree of damage and varieties, the general plum plum serious. Pharmacy tests showed that chlorothalonil, mancozeb, triadimefon 1000 times each have obvious antibacterial effect against the bacterium, and the antibacterial rate is more than 90%.