摘要
组建自然种群生命表来研究思茅松毛虫的种群动态。研究结果表明,思茅松毛虫平均存活率达1.63%,种群趋势指数为1.6529。在各虫态中,危害期幼虫期死亡率最高,其中主要影响因素是气候因素和被捕食,捕食性天敌影响很大,思茅松毛虫的防治关键时期也在幼虫危害期。根据这一结果和生物灾害精确管理原理,编制了思茅松毛虫防治历。
The natural population life table of Dendrolimus kikuchii was established to study its population dynamics.The results showed that its average survival rate was up to 1.63%,and its population trend index was 1.652 9.Of all its developmental stages,the mortality at its harmful larval stage is the highest,influenced by the two main factors,weather and predators.The critical period for controlling Dendrolimus kikuchii is at its harmful larval stage.According to the results and precise management principles for biological disaster control,a control calendar for Dendrolimus kikuchii was formulated.
出处
《安徽林业科技》
2011年第4期22-25,共4页
Anhui Forestry Science and Technology
关键词
思茅松毛虫
生命表
防治历
种群趋势
Dendrolimus kikuchii
Life table
Control calendar
Population trend
