摘要
通过制片镜检对麻疯树叶斑病进行病原茵初步鉴定,结果表明:麻疯树叶斑病病原为油桐叶斑小球壳菌(Mycosphaerella aleuritidis(Miyake)Ou)。选用百菌清、多菌灵、甲基托布津3种广谱杀菌剂在云南省元阳县膏桐良种繁育基地进行田间防治试验,研究结果表明:3种杀菌剂对麻疯树叶斑病均有一定的防治效果,且安全无药害。在病情发展较快时,每隔15 d,连续施药3次,多菌灵500倍液喷雾防治麻疯树叶斑病效果最好,防效达74.5%;甲基托布津防治效果次之,有效率为66.26%;百菌清防治效果最低,有效率为60.94%。
Preliminary identification on pathogen of Jatropha curcas leaf spot was conducted by microscope observation. The results showed that the pathogen was Mycosphaerella aleuritidis （Miyake） Ou. Three kinds of broad-spectrum fungicides were used for field control in the seed-breeding base of J. curcas in Yuanyang County, Yunnan Province, including chlorothalonil, carbendazim, and thiophanate-methyl. Three fungicides all had a certain degree of control effect for leaf spot without the risk of damage to J. curcas. Three applications of the fungicides were done at an intervals of about 15 days when the disease developed rapidly, of which, spraying 500-fold of carbendazim had the best result to control the leaf spot, with control effect of 74.50%. The next was thiophanate-methyl, with effectiveness of 66.26 %, chlorothalonil had the lowest effect, with effectiveness of 60.94%.
出处
《西北林学院学报》
CSCD
北大核心
2010年第6期119-121,151,共4页
Journal of Northwest Forestry University
基金
云南省科技厅“十一五”院所专项项目(2006KFZX-17)
国家科技部科技支撑计划项目(2007BAD32802)
国家林业局948项目(2008-4-04)
关键词
麻疯树叶斑病
病原初步鉴定
药剂防治
Jatropha curcas leaf spot
preliminary identification
chemical control
