豫南栗实象甲的生物学特性与为害现状研究

Study of the biological features and the destructive status quo of curculio denlipes roelots in Sout

摘要: 栗实象甲在豫南一年发生一代.河区李家寨镇栗实象甲每年5～7月末龄幼虫(老熟幼虫)在土室内化蛹,蛹期10～14d,之后,约10～18d羽化为成虫,成虫活动期1月以上,经潜伏、取食、交尾后产卵,卵经10～19d孵化变成初孵幼虫,初孵幼虫蛀食栗果后10～11月钻入土中6～15cm处(52.5%)或板栗树皮缝(37.5%)中越冬.豫南地区板栗园不同栽培品种中,不同土壤质地、不同降雨年份、不同管理水平,不同栗园周边栽培植物栗实象甲为害状况不同.

Abstract: Curculio denlipes roelots conceive once every year in South of Henan Province. In the lijiazhai country, which belongs to shihe district, the telophase larva's (mature larva's)of Curculio denlipes roelots are turned into pupals in the mud between the months of March and July every year.The period of pupals lasts 10 to 14 days. Then, after about 10 to 18 days, the pupals become mature worms whose active period last more than one month and which pass hiding, feeding, conceiving to laying the eggs in the same ...