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为提高天敌昆虫寄生松褐天牛以此控制松材线虫病的效果,本研究采用松褐天牛疫木就地隔离,同时加上人工助放管氏肿腿蜂的方法,开展了控制松材线虫病的试验。结果表明:管氏肿腿蜂对松褐天牛低龄幼虫的致死率最高达68.50%,对中老龄幼虫的致死率为44.58%。3月和4月释放,松褐天牛死亡率分别为57.11%和65.64%,而5月份释放幼虫死亡率只有14.57%。将疫木劈为4开的情况下时,天牛死亡率最高,达71.33%。单边放蜂,松褐天牛的死亡率最高达67.18%。铁丝网、渔网和聚丙烯布隔离疫木对松材线虫病的发生都有较好的控制效果,其中铁丝网隔离后,健康松树死亡率下降到2.5%,渔网和聚丙烯布隔离后,松树死亡率为12%,均显著低于对照的80%。表明隔离松疫木加上施放管氏肿腿蜂能有效控制松材线虫病流行危害。
In order to improve the natural enemies of parasitic Monochamus alternatus in order to control the effect of pine wilt disease, this study uses Monochamus alternatus on-site isolation, coupled with artificial way to help the tube-swelling beetle, Nematode disease test. The results showed that the death rate of Trichogramma jirga was 68.50% to young larvae and 44.58% to middle-aged and aged larvae. March and April release, Monochamus alternatus mortality were 57.11% and 65.64%, respectively, while in May the release of larval mortality was only 14.57%. In the case of splitting the log into 4 open, the mortality rate of the seasons was the highest (71.33%). Unilateral amphibious, Monochamus alternatus mortality of up to 67.18%. Barbed wire, fishing nets and polypropylene cloth isolation of the epidemic of pine wood nematode disease have a better control effect, including barbed wire isolation, the mortality rate of healthy pine fell to 2.5%, fishing nets and polypropylene cloth isolation, pine mortality Was 12%, both significantly lower than the control 80%. The results showed that the isolation of loose wood combined with the administration of Scleroderma spp. Could effectively control the epidemic of pine wilt disease.