摘要
试验用血清法检验了几种主要的捕食性天敌文对三化螟成虫和幼虫的捕食反应。化测定时间里,在秧田每天每亩成虫被蜘蛛捕食的量为9.94%,在大田每天每亩为620.2头。对幼虫的检验结果,转株幼虫有近1/10被捕食。结论是:蜘蛛类在三化螟成虫盛发期可起到一定的作用,对转株幼虫的杀伤作用较大。但由于天敌的数量消长和害虫的数量消长缺乏同步性,故达不到理想的控制效果。
The serological method was used to examine the predatory reactionsof main natural enemies to the adults and larvae of paddy stem borerTryporyza incertulas(Walker).During examination,9.94% of the adultsin rice seedling bed,620.2 adults/day/mu(666.7m^2)in paddy field andnearly one tenth of shifting larvae were taken by the spiders.Thecontrol effect was not desirable due to the population dynamics of thenatural enemies and this insect pest were not so coincident.
出处
《植物保护学报》
CAS
CSCD
北大核心
1992年第3期193-197,共5页
Journal of Plant Protection
关键词
捕食作用
血清法
三化螟
天敌
predation
serological method
Tryporyza incertulas
