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当前位置: 首页 > 文章 > 不同杀菌剂对桃枝枯病菌的毒力和田间防效 果树学报 2013,30 (2) 281-284
Position: Home > Articles > Virulence and control efficacy in field of fungicides on Phomopsis amygdali of peach Journal of Fruit Science 2013,30 (2) 281-284

不同杀菌剂对桃枝枯病菌的毒力和田间防效

作  者：
纪兆林;戴慧俊;张慧琴;金建芳;熊彩珍;徐敬友
单  位：
浙江省嘉兴市南湖区凤桥镇农业服务中心;浙江省农业科学院园艺研究所;浙江省嘉兴市南湖区林业与蚕桑站;扬州大学园艺与植物保护学院
关键词：
桃枝枯病;杀菌剂;毒力;田间防效
摘  要：
【目的】为了有效防治我国近些年新发现的桃枝枯病,【方法】采用菌丝生长抑制法,测定了15种杀菌剂对桃枝枯病菌(Phomopsis amygdali)的毒力,筛选出高效药剂,并进行田间防治试验。【结果】室内毒力测定显示,咪鲜胺抑菌能力很强,EC50值为0.0047 mg·L-1;其次是多菌灵、苯醚甲环唑和烯唑醇,EC50值分别为0.0276、0.0692、0.0762mg·L-1。田间防病试验表明,花后连续喷雾3次(每次间隔10 d),40%咪鲜胺水乳剂800倍稀释液防病效果最好,药后15 d对病枝和枯枝的防效分别为95.7%和89.4%,药后40 d分别为90.4%和88.5%;其次是50%多菌灵可湿性粉剂500倍液和10%苯醚甲环唑悬浮剂600倍液,药后40 d防效在70%～80%。【结论】咪鲜胺、多菌灵和苯醚甲环唑对桃枝枯病菌有较强的毒力,且对桃枝枯病的田间防治效果明显,其中咪鲜胺的毒力最强、防效最好。
译  名：
Virulence and control efficacy in field of fungicides on Phomopsis amygdali of peach
作  者：
JI Zhao-lin1,DAI Hui-jun1,ZHANG Hui-qin2,JIN Jian-fang3,XIONG Cai-zhen4,XU Jing-you1(1College of Horticulture and Plant Protection,Yangzhou University,Yangzhou,Jiangsu 225009 China;2Institute of Horticulture,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310021 China;3Agricultural Service Center of Fengqiao Town,Nanhu District,Jiaxing,Zhejiang 314007 China;4Forestry and Sericulture Station of Nanhu District,Jiaxing,Zhejiang 314051 China)
关键词：
Peach shoot blight(Phomopsis amygdali);Fungicides;Virulence test;Control efficacy in field
摘  要：
【Objective】Shoot blight of peach is a new serious disease infecting peach twigs in the southern China in recent years.The objective of the study was to screen the effective fungicides against the disease,with high control efficacy.【Method】The virulence of 15 fungicides against the pathogen Phomopsis amygdali was tested in the laboratory by mycelial growth inhibition method,and then the fungicides with high virulence were used in the field control trials.【Result】The results showed that prochloraz had the strongest virulence,with EC50value of 0.0047 mg·L-1,and carbendazim,difenoconazole and diniconazole had better antimicrobial effects,with EC50values of 0.0276 mg·L-1,0.0692 mg·L-1and 0.0762 mg·L-1,respectively.The field trials showed that prochloraz 40% EW(800-fold dilution) was the best to prevent diseased twigs and blight ones,with the control efficacy of 95.7% and 89.4% 15 days after three times of the spray,respectively,and with the efficacy of 90.4% and 88.5% 40 days after the spray.Furthermore,the control efficacy of carbendazim 50% WP(500-fold dilution) and difenoconazole 10% SC(600-fold dilution) were 70% to 80% 40 days after the spray.【Conclusion】The study indicated that prochloraz,carbendazim and difenoconazole had high virulence to peach shoot blight pathogen P.amygdali,and the three fungicides had significant control effects on the disease in field.Among of them,prochloraz had the highest virulence to P.amygdali and the best control efficacy on peach shoot blight.

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