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月季 ( Rosa chinensis Jacq.)疫病是广州地区新发生且危害严重的病害 ,其发生与温度密切相关。病原菌被鉴定为柑橘生疫霉 ( Phytophthora citricola Saw.)。田间观察及接种试验结果表明 :该菌在不同的月季品种上致病性差异很大 ,主要为害在广州地区生长速度快的品种——金奖章 ( GoldenMedal)、玛德隆 ( Madelon)。田间化学防治试验结果显示 :瑞毒霉锰锌和硫酸铜对控制该病十分有效。
Rosa chinensis Jacq. Is a new and serious disease in Guangzhou, and its occurrence is closely related to temperature. The pathogen was identified as Phytophthora citricola Saw. The results of field observation and inoculation showed that the pathogenicity of this strain was very different among different rose varieties, which mainly belonged to Golden Medal and Madelon, which were growing fast in Guangzhou. Field chemical control test results show that: ruben mold and zinc and copper sulphate control of the disease is very effective.