宜丰山区枫杨扁叶甲的初步研究

STUDY ON THE FLAT LEAF BEETLE GASTROLINA DEPRESSA BALY IN YIFENG MOUTAIN REGION

宜丰山区枫杨扁叶甲为害枫杨甚烈,此虫一年2代,部分3代,4月上旬～6月是为害盛期.文中对其生物学、种群增长趋势和天敌均作了记述和分析。在种群增长趋势中,应用了自然种群生命表、种群繁殖生命表及实验种群稳定龄期组配表等方式,加以表达。

The flat leaf beetle Gastrolina depressa Baly is a serious pest of pterocarya stenopteraC.De.in Nifong moutain region.It occures two,and a partly three generations per year,and from April to June,the damage is more serious.This paper discribes the life history,theincreased tendency of population density,and the natural enemies of it.The authors use thelife table,the age schedule of female birth innate capacity for increase,and also the stableage composition of the laboratory populations to illustrate the increased tendency.