【摘要】 试验结果表明,植物源药物苦烟制剂对带疫松墨天牛成虫具有强烈的击倒作用。400倍苦烟制剂在 24h时内对松墨天牛成虫击倒率为 100%;BV制剂(白僵菌和轮枝菌)对带疫松墨天牛具有 42 9%的致死作用。同时,发现BV制剂还具有除治松材线虫病的明显效果。从 2001~2003年,在奉化发病林地内使用BV制剂后,林地内的松树枯死率逐年下降, 2001年下降率 61 86%, 2002年为 35 2%, 2003年为 54 8%,而对照林地枯死松树下降率约为0。认为苦烟和BV混合制成的苦烟菌剂是有待开发的对环境安全的防治松材线虫病药物。更多还原

【Abstract】 Experiments indicated that 1.2% Manic-EC preparation,which is a kind of plant pesticide made of matrine and nicotine could intensely kill the beetles (Monochamus alternatus Hope) carrying pine wood nematodes (Bursaphelenchus xylophilus).The death rate to beetles was 100% when the preparation was diluted to 400 times after sprayed in 24 h.B V (Beauveria bassiana×Verticillium lecanii) mixtures also could kill beetles and death rate to beetles was about 42.9%,showing mixtures had a good effect to pine wilt disease.The wilting rates of pine trees in the forest had declined year by year from 2001 to 2003 after releasing B V mixture.The decline rate in 2001 was 61.86%,35.25% in 2002 and 54.8% in 2003,but the decline rate of the contrast in the forest is about null.Combining Manic-EC with B V may be a good kind of production worth to be developed and safe to the environment.更多还原