论文部分内容阅读
为人工繁殖淡足侧沟茧蜂以控制甜菜夜蛾的发生为害,在室内恒温27℃条件下,以专用人工饲料饲喂甜菜夜蛾接种淡足侧沟茧蜂,研究了淡足侧沟茧蜂的生物学特性.结果表明:1)淡足侧沟茧蜂羽化多在白天,以8:00至16:00时最多,雄蜂早于雌蜂.出蜂时间6~7 d,以1~3 d最多,占90%以上.雌雄一生均可交配多次.未交配雌蜂其子代全为雄蜂.雌蜂产卵高蜂多在羽化交配后1~3 d,卵多产于幼虫腹部第5腹节与臀节之间;绝大多数寄主体内只产1粒卵.2)在一天中,侧沟茧蜂的寄生率以14:00至22:00时间段最高.雌蜂以第2天的寄生率最高.单雌一生平均寄生虫数可达101.6头.淡足侧沟茧蜂对甜菜夜蛾1～4龄幼虫的选择寄生比率分别为0.086 3,0.279 5,0.260 9,0.373 3.
In order to control the occurrence of Spodoptera exigua larvae, Artemisia giganticae was inoculated with beet armyworm with Artificial Artificial Feeding for the purpose of controlling the occurrence of Spodoptera exigua. The results showed as follows: 1) The light-emergence of D. crassipes in the light-footed side was more in the daytime than that of the female bees at 8:00 to 16:00, 3 d up, accounting for more than 90% .The male and female can be mated multiple times throughout life.And unofficened female bees offspring all male drone.Female bee ovipositional high bee 1 ~ 3 d after emergence mating, eggs prolificat larva abdomen Between the 5th abdomen and the buttocks, and only 1 in the vast majority of hosts.2) In one day, the parasitism rate of Paralichthys olivaceus was highest at 14:00 to 22:00, The parasitism rate was the highest in two days, and the average number of parasites per single female was up to 101.6. The parasitism rates of parasitism of 1st and 4th instar larvae of Spodoptera exigua were 0.086 3,0.279 5,0.260 9,0.373 3.