论文部分内容阅读
该虫在豫西地区每年发生1代,多以卵在卵囊内于树下土中越冬,少数以1龄若虫在卵囊中越冬。卵历期约250~270d,若虫历期70~80d,蛹历期7~10d,雄成虫历期7~9d,雌成虫历期40~50d。2月下旬至6月下旬均可危害。草履蚧食性杂,主要靠扩散传播,远距离传播则靠苗木调运扩散。天敌是控制草履蚧种群繁殖的重要因素,在生产中应注意药物的合理使用,尽量充分保护天敌昆虫。
The insects occur in the western region of Henan 1 generation each year, and more eggs in the oocysts in the trees in the soil overwintering, a few to 1 instar nymphs in the oocysts winter. Egg duration is about 250 ~ 270d, nymph duration is 70 ~ 80d, pupal duration is 7 ~ 10d, male adult duration is 7 ~ 9d, female adult duration is 40 ~ 50d. Late February to late June can be hazardous. Grasshopper feeding habits, mainly spread by diffusion, long-distance transmission spread by nursery stock. Natural enemies is an important factor in controlling the population of Caenorhabditis. Populations should pay attention to the rational use of the drugs in production and try to fully protect the natural enemies of insects.