论文部分内容阅读
松毛虫赤眼蜂（ＴｒｉｃｈｏｇｒａｍｍａｄｅｎｄｒｏｌｉｍｉＭａｔｓｕｍｕｒａ）、白跗平腹小蜂（Ａｎａｓｔａｔｕｓａｌｂｉ－ｔａｌｓｉｓＡｓｈｍｅａｄ）是多种农林作物害虫的重要寄生蜂。松毛虫赤眼蜂在浙江于３月下旬开始羽化，１０月上旬至１１月以蛹在第３代松毛虫（ＤｅｎｄｒｏｌｉｍｕｓｐｕｎｃｔａｔｕｓＷａｌｋｅｒ）和柳杉毛虫（Ｄ．ｌａｆｌｐｅｎｕｉｓＷａｌｋｅｒ）的卵中越冬，自然温度下全年经历１７～１９世代，用松毛虫做中间寄主，发育起点温度６．０２±０．５１℃，有效积温２１２．０６℃ｄ，在２０～２１℃下，成蜂寿命５～１０ｄ，每雌蜂一生平均产卵７６．５粒，在年周期活动中该蜂种群出现２～３个高峰，影响该蜂种群消长的主要因子为林间昆虫卵的数量、卵期以及蜜源植物种类、花期和林间极端温度，该蜂在林间水平扩散距离最远达８４．５ｍ，对松毛虫卵的自然寄生率为３７．６５％，人工释放时对松毛虫卵的寄生率可达８９．８％。白跗平腹小蜂在浙江于４月中、下旬开始活动，９月下旬至１０月，以老熟幼虫在柳杉毛虫、松毛虫等卵中越冬，自然温度下全年经历６～７世代，用柞蚕剖腹卵做中间寄主，发育起点温度１０．８７±０．４６℃，有效积温３１３．８７℃ｄ，?
Trichogrammadendrolimi Matsumura and Anastatusalbi-talsis Ashmead are important parasitic wasps for many pests of agricultural and forestry crops. Dendrolimus trichogramma began to emerge in late March in Zhejiang Province. From early October to November, the pupae overwintered in the eggs of Dendrolimus punctatus Walker and D. laflpenuis Walker during the whole year at natural temperature After experiencing 17 to 19 generations, with Dendrolimus as the intermediate host, the development of the starting temperature of 6.02 ± 0.51 ℃, the effective accumulated temperature of 212.06 ℃ d, at 20 ~ 21 ℃, into the bee life of 5 ~ 10d, The average number of spawning eggs was 76.5, and the bee population peaked from 2 to 3 in annual cycle. The main factors influencing the growth and decline of the bee population were the number of eggs in the forest, the number of eggs and the species of nectar, flowering and forest Between the extreme temperature, the bee spread in the forest the distance as far as 84.5m, the natural parasitism rate of pine deer eggs was 37.65%, artificial parasitism of the pine caterpillar eggs up to 89.8 %. Bastardis larvae in Zhejiang in April, late start activities, late September to October, with mature larvae in cedar caterpillars, pine caterpillars and other eggs in the winter, the natural temperature throughout the year through 6 to 7 generations , With turtle silkworm laparotomy eggs as the intermediate host, the development of the starting temperature of 10.87 ± 0.46 ℃, the effective accumulated temperature of 313.87 ℃ d ,?