论文部分内容阅读
樗蚕（ＰｈｉｌｏｓａｍｉａｃｙｎｔｈｉａＷａｌｋｅｒｅｔＦｅｌｄｅｒ）在保定１ａ发生２～３代，以２代为主，以蛹在茧内于树上越冬。越冬代成虫羽化高峰期为５月８日，第１代成虫羽化高峰期为７月１６日。４龄幼虫排粪量为２６粒／头。４龄幼虫期平均抓着力为４２ｇ，５龄幼虫平均抓着力为１９５ｇ。樗蚕性比为雌∶雄＝１∶１０３。在河北省主要寄主植物有臭椿、臭檀、花椒、枣树、泡桐等，另外有１３种植物，共１８种，分别隶属于１６科。
Silkworm (PhilosamiacynthiaWalkeretFelder) in Baoding 1a occurred 2 to 3 generations, mainly on behalf of the 2nd generation, with the pupa in the cocoon in the tree winter. The overwintering generation adult emergence peak is May 8, the first generation adult emergence peak is July 16. 4th instar larvae fecal excretion of 26 / head. 4th instar larvae average grip of 42g, 5th instar larvae average grip of 195g. Baba sex ratio of female: male = 1: 1 03. The main host plants in Hebei Province are Ailanthus altissima, Ottomania, Zanthoxylum bungeanum, Chinese date tree, Paulownia, etc. In addition, there are 13 kinds of plants, a total of 18 species, belonging to 16 families.