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时间:2018-09-13
《防治白菜软腐病的药剂筛选》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、维普资讯http://www.cqvip.com每北震址亏掘2005,14(2):105~107(1taAgriculturae]doreah'-occidentalisSinica————防治白菜软腐病的药剂筛选陈丽,安德荣卜,张钰铭(1.西北农林科技大学植物保护学院.陕西杨凌712100;2.龙口市新嘉林业站,山东龙口265711)摘要:采用抑菌圈法测定了,1种杀菌剂同浓度下对白菜软腐病菌的抑菌能力。结果表明:651227优,45蒜素优,17.5链霉优都对白菜软腐病菌有不Iq的抑制活性。其中651227优对白菜软腐病的抑菌效果最佳,其毒力曲线为.
2、).-_112.95一149.42,EC5;3o.66mg/I;17.5链霉优次之,其毒力曲线为j一25·197x35.107,Ec为134.47mg/I;45蒜素优抑菌效果较差,其毒力曲线为.).一7.8982x一9.1694,EC:。为3176.78mg/I;26土霉优在试验设定的5个浓度下埘白菜软腐病无抑菌活性。对抑菌效果好的651227优和17.5链霉优进行田间药效试验。结果表明:651227优稀释2500倍和2000倍的田问防效分别可达90.78和95.56,显著优于对照药剂72农用链霉素2000倍的防效66.8o,是防治白菜软腐病的理想药
3、剂之一。关键词:白菜软腐病;毒力测定;防效;药剂筛选中图分类号:$436.341.13文献标识码:A文章编号:1004—1389(2005)02—0105—03ScreeingofBactercidesforControllingErwiniaCarotororaCHENLi1,ANDe—rongandZHANGYu—ruing(1.CoilegeofPI川I%otection.NorthwestA8FUniversity·YanglingShannxi712100·China;2·x“曲F。。YStati0nofI.ongkou,ImngkouSh
4、andong265711,China)Abstract:ExperimentingtheinhibitiondegreeofbacteriostasistoErwiifrotrJr。,.whichwasdeteminedwithfourbactericidesofdifferentconsistencybyadoptingthedetectionofinhibitionzone·Theresu1tsshowedthatthe65/~/o1227wasthebestbacteriostasistoErwiniacarot。,.。ra,it’stoxic
5、ityequationbeing一112.95一149.42,withitsvalueofECj。was30.66mg/I,the17.5Lianmeiyouwasbetterbacteriostasis,it’stoxicityequationwas、J一25.197-r——35.107,withitsvalueofECjowas134.47mg/I,the45Suansuyou’swasworse,itstoxicityequationwas一7·8982:c一9·1694,withitisva1ueofECjnwas3176.78mg/I,an
6、dthe26Tumeiyounobacteriostasis·Fieldexperimento{thecontro1effecttoEc,,.Dtorowasdeteminedwith651227youand17·5Lianmeiyou·Theresu1tsshowedthattheefficacyof651227youECreached90.78%,96.65infieldconditionwh。ndiluted2500and2000timesbywaterrespectively,thecontroleffectwassignificantlyb
7、etterthanthatof72streptomycinwhichefficacywas66.80whendiluted2000times·whichwasoneofexceenbactercideincontrollingErwiniacarotorora·Kevw0rds:E刑ia(-arotorora;Determinationoftoxicity;Controleffect;Screeningofbactercides白菜软腐病是白菜生产上的3大病害之一,该病由欧氏杆菌属细菌(Erwiniacarotovora)侵收稿日期:20040604
8、修回日期:200411-25作者简介:陈技丽(1新97基5专),女,陕两礼.譬泉人,在读硕o土士研究生嘏·主
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