为筛选诱杀树沙枣Elaeagnus angustifolia和抗性树种新疆杨Populus alba var.pyramidalis合理配植比例,实现生态自控光肩星天牛Anoplophora glabripennis灾害,以甘肃河西走廊和新疆部分地区的已有光肩星天牛长期危害,且包括沙枣树和新...为筛选诱杀树沙枣Elaeagnus angustifolia和抗性树种新疆杨Populus alba var.pyramidalis合理配植比例,实现生态自控光肩星天牛Anoplophora glabripennis灾害,以甘肃河西走廊和新疆部分地区的已有光肩星天牛长期危害,且包括沙枣树和新疆杨等多树种混交林为研究对象,调查、对比和分析沙枣自然调控天牛种群的能力,筛选和提炼出可实现“有虫不成灾”的诱杀树沙枣与抗性树种新疆杨的合理配植模式。结果显示:混交林内沙枣树上光肩星天牛的刻槽数远高于抗性树种新疆杨,表现出显著的引诱功能;沙枣树对光肩星天牛的卵和初孵幼虫的杀灭率在99.8%以上,具有很强的诱杀能力,发挥了对新疆杨的高效保护作用;在不同沙枣配比的林带中,沙枣树对光肩星天牛种群的调控能力有较大差别,防护林带中沙枣树与新疆杨行间或株间配植比例约为2∶8,园林绿化林中沙枣树与新疆杨以块状或带状配植比例约为3∶7时,可达到“有虫不成灾”,实现光肩星天牛灾害的生态自控。在防护林建设中,应充分发挥沙枣对光肩星天牛的诱杀功能,合理配植诱杀树种沙枣与抗性树种新疆杨,使光肩星天牛种群数量稳定在成灾水平之下,为服务“三北”防护林工程区林业有害生物防治提供借鉴。展开更多
A new pathogen Nosema glabripennis Zhang parasiting the longhorned beetle Anoplophora glabripennis. According to the field investigation, about 2.8% of the real pathogens for naturally dead longhorned beetles were mic...A new pathogen Nosema glabripennis Zhang parasiting the longhorned beetle Anoplophora glabripennis. According to the field investigation, about 2.8% of the real pathogens for naturally dead longhorned beetles were microsporidiums and the other pathogens were mostly saprophytic or other parasitic organisms, which parasitized the beetles after infection by the microsporidium. The results of bioassey showed that the mortality of the longhorned beetle larvae was 27.4%. The microsporidium possesses the ability of vertical dissemination and was hopeful to be an effective natural organism to control the beetles.展开更多
文摘为筛选诱杀树沙枣Elaeagnus angustifolia和抗性树种新疆杨Populus alba var.pyramidalis合理配植比例,实现生态自控光肩星天牛Anoplophora glabripennis灾害,以甘肃河西走廊和新疆部分地区的已有光肩星天牛长期危害,且包括沙枣树和新疆杨等多树种混交林为研究对象,调查、对比和分析沙枣自然调控天牛种群的能力,筛选和提炼出可实现“有虫不成灾”的诱杀树沙枣与抗性树种新疆杨的合理配植模式。结果显示:混交林内沙枣树上光肩星天牛的刻槽数远高于抗性树种新疆杨,表现出显著的引诱功能;沙枣树对光肩星天牛的卵和初孵幼虫的杀灭率在99.8%以上,具有很强的诱杀能力,发挥了对新疆杨的高效保护作用;在不同沙枣配比的林带中,沙枣树对光肩星天牛种群的调控能力有较大差别,防护林带中沙枣树与新疆杨行间或株间配植比例约为2∶8,园林绿化林中沙枣树与新疆杨以块状或带状配植比例约为3∶7时,可达到“有虫不成灾”,实现光肩星天牛灾害的生态自控。在防护林建设中,应充分发挥沙枣对光肩星天牛的诱杀功能,合理配植诱杀树种沙枣与抗性树种新疆杨,使光肩星天牛种群数量稳定在成灾水平之下,为服务“三北”防护林工程区林业有害生物防治提供借鉴。
文摘A new pathogen Nosema glabripennis Zhang parasiting the longhorned beetle Anoplophora glabripennis. According to the field investigation, about 2.8% of the real pathogens for naturally dead longhorned beetles were microsporidiums and the other pathogens were mostly saprophytic or other parasitic organisms, which parasitized the beetles after infection by the microsporidium. The results of bioassey showed that the mortality of the longhorned beetle larvae was 27.4%. The microsporidium possesses the ability of vertical dissemination and was hopeful to be an effective natural organism to control the beetles.
