摘要
研究表明，螟长距茧蜂发生高峰期比玉米螟成虫高峰期大约推迟６—９天，与春玉米抽雄期相一致．玉米抽雄开花时绝大部分玉米螟幼虫处在易被螟长距茧蜂寄生的Ⅲ、Ⅳ龄．玉米开花后雄穗的形态结构和营养成分发生改变，致使幼虫下垂转移寻找更适宜的食物．螟长距茧蜂被取食玉米雄穗的玉米螟幼虫所吸引．其寄生与玉米螟幼虫的发育和玉米生育期密切相关．
The study shows that the peak of M. linears occurrence is about 6-9 days later than thatof O. furnacalis adults, and conformed with the tasseling of spring corn. When the corn istasseling, most of O. furnacalis larvae are in 3rd and 4th instar, which are easy to be parasitized by M. linears. Owing to the changes of morphological structure and nutritivecomposition of tassels after flowering, O. furnacalis larvae are forced to move downwardto find more favorable foods. M. linears are attracted by O.furnacalis larvae and its parasitism is closely related to the development of O. furnacalis larvae and the growth periodof corn.
出处
《应用生态学报》
CAS
CSCD
1995年第1期67-70,共4页
Chinese Journal of Applied Ecology
基金
浙江省科委"八.五"重点攻关项目
关键词
螟长距茧峰
玉米螟
玉米
生物防治
Macrocentrus linears, Ostrinia furnacalis, Corn.
