【摘要】 为解决生产上草履蚧的防控难题,本文对草履蚧的生物学特性进行了初步研究。结果表明:该虫在河北省石家庄地区1年发生1代,以卵越过夏、秋和冬天。卵于12月下旬开始孵化,1月下旬若虫开始上树。雄虫蜕皮3次,雌虫蜕皮4次,第1、2次蜕皮在树上进行,分别在3月上旬和4月下旬;第3、4次蜕皮在树下,分别在4月下旬至5月上旬和5月中下旬。3次蜕皮后分为雌雄虫,雄虫即行化蛹、羽化、交尾后死亡;雌虫继续上树为害至5月中下旬下树蜕完第4次皮后再次上树为害至6月上中旬下树产卵。1龄若虫抗低温、水淹、耐饥饿,并选择偏好在树冠上中部1～2年生枝阴面群栖为害。更多还原

【Abstract】 In order to solve the control problem of Drosicha corpulentain production,the biological characteristics of Drosicha corpulenta were preliminarily studied in this paper.The results showed that the insect generated one generation a year in Shijiazhuang area of Hebei Province,and its eggs pass through summer,autumn and winter.The eggs begin to hatch in late December and nymphs begin to climb trees in late January.Males molt three times,females molt four times,the first and second molt on trees,respectively,in early March and late April;the third and fourth molt under trees,respectively,from late April to early May and mid-late May.After three times of molting,they were divided into male and female.The male died after pupation,emergence and mating.The female continued to infect the tree until the end of May.After the fourth time of molting,the female again infested the tree and laid eggs in the middle of June.The 1 st instar nymphs were resistant to low temperature,flooding and starvation,and preferred to live in the shade of 1 or 2-year-old branches in the upper and middle part of the crown.更多还原