论文部分内容阅读
壳点红蚧一年发生一代,寄主为麻(木樂)、栓皮(木樂),对放养柞蚕影响很大。每年3月下旬和4月中旬越冬的雌雄虫开始为害,5月上旬雌成虫出现,該虫不能孤雌生殖,雌雄交尾后,5月末是产卵和孵化盛期。一龄若虫固定为害,6月中旬至11月中旬滞育,11月中下旬进入二龄期,雌雄分化,分群群居越冬。对該虫的各虫态作了詳细描述和图示。通过生命表分析,提出若虫孵化期、雄虫羽化期和二龄越冬期是防治的有利时期。
Red spot shell pest generation occurs a year, the host is Ma (Mule), cork (Mule), the stocking tussah great impact. Each year in late March and mid-April the male and female overwinter began to harm, early May female adult appears, the insects can not parthenogenesis, male and female mating, the end of May is the spawning and hatching peak. The first instar nymphs are fixedly harmed, diapause occurs from mid-June to mid-November, and enters the second-instar in mid-to-late November. The insect states of the worm made a detailed description and illustration. According to the analysis of life table, it is proposed that the nymphs hatching period, the male eclosion period and the second instar wintering period are favorable periods for prevention and control.