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摘要: 为筛选出对松材线虫Bursaphelenchus xylophilus具有高效快速杀灭作用的药物,采用线虫悬浮液 + 农药的直接触杀法,选择了22种药物处理松材线虫1 h,测定了对松材线虫的半致死浓度(LC50)。结果表明:不同药物对松材线虫表现出不同的杀灭作用,供试的22种药物中,甲基阿维菌素(甲维盐)杀灭效果最好,1 h 半致死浓度仅为0.3 mgL-1;杀螟丹效果最差,1 h 半致死浓度达21 053 mgL-1。另外,苦参碱、抑太保、溴氰菊酯和阿维菌素等4种药物对松材线虫具有很强的毒杀作用,其1 h半致死浓度分别为1.2,2.5,4.2和4.5 mgL-1。甲维盐和阿维菌素能高效快速杀灭松材线虫;这些对松材线虫高效敏感药物的筛选成功,为开发树干注射剂防治松材线虫病提供了基础。图1表3参25Abstract: To determine highly toxic and fast-acting pesticides to combat the pine wood nematode(Bursaphelenchus xylophilus),a toxicity test of 22 kinds of pesticide used against the pine wood nematode (PWN) was conducted using a PWN suspension liquid plus pesticide with a processing time of 1 h to determine a median lethal concentration(LC50) for each pesticide. Results showed that the LC50 after a 1 h treatment was best with emamectin (0.3 mgL-1) and worst with cartap (21.053 gL-1). In addition,four kinds of pesticide revealed acute activity toward the pine wood nematode with an LC50 after 1 h treatment of:matrin (1.2 mgL-1),chlorfluazuron (2.5 mgL-1),deltamethrin (4.2 mgL-1),and abamectin (4.5 mgL-1). This meant that emamectin and abamectin could quickly and efficiently kill PWN,and the selected pesticides with acute activity to PWN could be used to develop a trunk injection against pine wilt disease. [Ch,1 fig. 3 tab. 25 ref.]
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.03.021

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