加拿利海枣褐斑病的发生与防治

加拿利海枣褐斑病病原菌为柯氏帚梗柱孢霉，该病会感染多种棕榈科植物，最适生长温度为25～35℃，每年3-11月病害均可发生，5—8月为发病高峰期。室内和盆栽小苗药剂试验表明：50％多菌灵WP、25％咪鲜胺EC和50％英纳WP3种杀菌剂有较好的防治效果，盆栽小苗施药后预防效果可达100％，治疗效果平均可达60％以上。

Occurrence and Control of Brown Patch Disease of Phoenix canariensis

Brown patch disease of Phoenix canariensis is caused by the fungus of Cylindrocladium colhounii. It infected many species in the Palmae family. It was observed that the pathogen fungus Cylindrocladium colhounii developed best under the optimum temperature from 25℃ to 35℃, the brown patch disease occurred from Match to November, whereas its occurrence peak took place between May to August each year. The experiments both in the laboratory and in the open air with potted seedlings indicated that the disease could be effectively controlled with three kinds of fungicides, i. e. , 50% of Carbendazim WP, 25% of Prochloraz EC and 50% of Yingna WP. The results showed that the prevention effect could reach 100% and the average treatment effect was over 60% by spra- ying these pesticides on the potted seedlings.