摘要
2005—2007年间,在黑龙江省朗乡林业局采用林间定期取样调查的方法,通过测量不同发育阶段幼虫的头宽,确定了松梢象甲幼虫的龄数;通过统计各龄幼虫数量和发育进度,用期距法确定了各龄幼虫发生盛期,并为当地松梢象甲的生产防治提出了最佳防治时间。
During 2005-2007,larval instar numbers of Pissodes nitidus was.studied by the method of regular sampling, from field and measurement of head width of different development stage larvae in Langxiang Forestry Bureau of Heilongjiang Province. Occurrence peak time was confirmed for each instar larva by the method of statistic of individual numbers of each instar larvae and development progress, and a best time for controlling the pest in local bureau was suggested.
出处
《林业科技》
北大核心
2008年第6期30-32,共3页
Forestry Science & Technology
基金
黑龙江省攻关项目(GC05B208)资助
关键词
松梢象甲
幼虫龄数
发育历期
Pissodes nitidus
Larval instar numbers
Development duration