豫北红环瓢虫的发生特点及对草履蚧的控制利用

The Control Action of Rodolia limbata Happen Characteristics to Drosicha corpulenta in Northern Henan

红环瓢虫(Rodolia limbata)在豫北1年发生1代,以成虫越夏越冬;翌年3月上旬越冬成虫开始活动并取食、交配、繁殖。3月中旬至5月上旬为卵期;4月上旬至6月上旬为幼虫期;5月中旬至6月上旬为蛹期;5月中下旬至翌年5月中旬为成虫期,红环瓢虫与草履蚧(Drosicha corpulenta)的发生周期非常吻合,通过合理保护和生态利用红环瓢虫,可以有效持续控制当地杨树草履蚧的危害。

Rodolia limbata occurs one generation a year in Northern Henan, with the adult oversummering and overwintering; following year, beginning in early March overwintering activities and feeding, mating and reproduction. Mid - March to early May for the egg stage ; early April to early June was the larval stage ; May to mid - June to early pupal stage; late May to following year mid - May for the adult stage. The of occurrence cycle Rodolia limbata with Drosicha corpulenta very consistent. Through the rational conservation and ecological use, can effectively control the local poplar Drosicha corpulenta sustained hazards.