摘要
葱斑潜蝇在山东 1年发生 6～ 7代 ,以蛹于 1 0月在地表 5cm左右土中越冬。 4月中下旬越冬代蛹开始羽化 ,羽化高峰在 5～ 6月 ,4月下旬始见幼虫 ,5月中旬出现第 1代成虫。世代重叠发生 ,盛发期在 6～ 9月。完成 1代需 1 7～ 3 1天。其中卵期 2～ 5天 ,幼虫期 3～ 9天 ,蛹期 1 1～ 1 8天。成虫活动高度多在 1m以下 ,取食、产卵喜在大葱心部第 2 ,3叶 ,平均单雌产卵 1 0 9 3粒。幼虫潜食寄主植物的叶片而形成潜道。温度 2 0～ 3 2℃、湿度 60 %～ 90 %利于其生长发育、危害和繁殖。恒温下测得全世代的发育起点温度为 1 0 0℃ ,有效积温为 3 61 1日度。土壤含水量 5 %～ 1 5 %适宜蛹羽化。寄生性天敌有幼虫期寄生的姬小蜂 6种 ,寄生率达 40 % ;幼虫—蛹期寄生的金小蜂 1种、茧蜂 2种 ,寄生率为 2 8 4%～ 79 4%。
There are 6 or 7 generations of Liriomyza chinensis (Kato) in a year in Shandong Province.It overwinters as pupa from October in the soil 5 cm deep below.The overwintering pupae begin to emerge in the middle or late April and the peak of emergence is from May to July.The larvae are found in late April.The first generation adults occur in the middle of May.Generations are overlaped.The majority of the pest occur from June to September.It needs 17 to 31 days to complete one generation. Egg stage is 2 to 5 days,larval stage is 3 to 9 days,and pupal stage is 11 to 18 verrical range of adult morement is no more than 1 above the ground, feeding and oviposition normally takes place on the second and third leaves of Chinese onion.Average number of eggs laid per female is 109\^3. Larvae damage the leaves of host plants and form leaf\|mines.The natural conditions with 20℃ to 32℃ and RH 60% to 90% are fit for development and reproduction of the leafminer.The threshold temperature of development for a whole generation is 10℃,and the effective temperature accumulated is 361\^6 day\|degree.Five to 15 percent of soil water content is suitable to the pupa emergence. Six larval parasitoid species of Eulophidae have been found,and the rate of parasitism is about 40% larva\|pupal parasitoids, one species of Pteromalidae and two species of Broconidae, parastism among 28\^4% to 79\^4%.
出处
《昆虫知识》
CSCD
北大核心
2001年第5期366-371,共6页
Entomological Knowledge
基金
山东省科委重点研究项目内容
