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杨叶甲(Chrysomela populi)是东北地区杨柳科植物的重要害虫。为更好地开展绿色防控,研究了该虫生物学特性及对9种植物的嗅觉行为反应。结果表明,杨叶甲在长春地区1年发生1代,极少数个体在环境条件适宜时可完成2代。杨叶甲以成虫在枯枝落叶层或浅土层内越冬。越冬成虫最早于4月下旬开始陆续出土,并上树取食嫩芽,5月上旬开始产卵,下旬第1代卵陆续孵化,随后幼虫开始取食,6月上旬开始化蛹,中、下旬出现第1代成虫。利用Y形嗅觉仪测定发现未交配和已交配的杨叶甲雌成虫对种植物挥发物均有不同程度趋向性,对杨树和旱柳的选择差异达到显著水平,已交配的雄虫仅对旱柳挥发物味源有明显选择性。
Chrysomela populi is an important pest of the willow plant in Northeast China. In order to better carry out the green control, the biological characteristics of the worm and the olfactory behavioral responses to nine kinds of plants were studied. The results showed that the leafhopper occurred in Changchun area for 1 year and the few individuals could complete 2 generations when the environmental conditions were suitable. Young leafhopper to adults in the litter layer or shallow layer of winter. The overwintering adults first unearthed in late April one after another, and on the tree feeding buds, spawning in early May, the first generation of eggs after another hatch, and then the larvae began feeding, early June pupation, mid and late Generation 1 adult appears. The results of Y-shaped olfactometer showed that both unpaired and mated Populus tomentosa adults had varying degrees of trend toward plant volatiles, significant differences in the selection of poplar and willow, Taste source has obvious selectivity.