The field survey studied the life history of Lymantria dispar and larvae hatching rate in Yanbi-an of Jilin.The results showed that Lymantria dispar in Yanbian bred a generation every year to complete the overwintering of "larvae in eggs" with embryonic development .In early May next year , the budding poplar accompanied with the hatching of larvae .The hatching of larvae was prime in mid-May, climax in late May, and terminal in early June .Larvae aged to pupation in early July , which was prime in mid-Ju-ly, climax in late July, terminal in early August.Adult insects began to eclosion in mid-July with the prime period in late July , the peak in mid-to-end August and the terminal period from late August to early September .The spawning period was prime in mid-July , climax in mid-to-end August , and terminal in late August to early September .In the end of August , eggs developed into complete larvae embryos and entered a diapause state .Based on the relevance of the hatching rate of Lymantria dispar larvae and the daily average temperature, the linear regression model Y1 =12.0742X1 -139.1908 was established to predict the hatching rate of Lymantria dispar larvae that day , which was proved with the actual data .%通过野外调查的方法,对吉林省延边地区舞毒蛾的生活史及幼虫孵化率进行了研究.结果表明,舞毒蛾在延边地区1年发生1代,以完成胚胎发育的"卵内幼虫"越冬.翌年5月上旬;杨树将要萌芽时幼虫开始孵化出壳.幼虫孵化始盛期为5月中旬,高峰期为5月下旬,末期为6月上旬;幼虫在7月上旬开始老熟化蛹,化蛹始盛期为7月中旬,高峰期为7月下旬,末期为8月上旬;成虫在7月中旬开始羽化,羽化始盛期为7月下旬,高峰期为8月中下旬,末期为8月底至9月初;产卵始盛期在7月中旬,高峰期为8月中下旬,末期在8月底至9月初;卵在8月底开始发育成较为完全的幼虫胚胎,随之进入滞育状态.根据舞毒蛾幼虫孵化率与日均温值的相关性,建立线性回归模型Y1=12.0742 X1-139.1908来测报舞毒蛾幼虫的当日孵化率,并进行了回测验证.
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