摘要
豆柄瘤蚜茧蜂Lysiphlebus fabarum Marshall和广双瘤蚜茧蜂Binodoxys communis Gahan是大豆田大豆蚜的重要寄生蜂。2009—2010年,采取棋盘式采样和随机抽样调查相结合的方法,在辽宁岫岩对大豆田内的豆柄瘤蚜茧蜂和广双瘤蚜茧蜂的发生动态进行了研究。结果显示,2009年,豆柄瘤蚜茧蜂6月20号前后在田间开始少量发生,7月上旬数量急速上升,中旬达到最高值,然后开始下降;8月中旬出现第2个高峰,数量上明显小于第1个高峰期,但2010年只有1个高峰,第2个高峰不明显;广双瘤蚜茧蜂6月底开始出现并不断上升,到7月上、中旬达到一定量后持续到8月底。总体来说,豆柄瘤蚜茧蜂发生的时间比广双瘤蚜茧蜂早,且数量也较多。同时在大田按照不同的处理,对豆柄瘤蚜茧蜂进行大田罩笼繁殖研究,当豆柄瘤蚜茧蜂与适龄蚜虫数量比值为1:100的情况下产生的僵蚜数量最多。为大田有效利用蚜茧蜂控制大豆蚜提供了必要的基础资料。
The braconid parasitoids,Lysiphlebus fabarum Marshall and Binodoxys communis Gahan,are important natural enemies of the soybean aphid Aphis glycines.In 2009 and 2010,the temporal distribution of these species was studied in soybean fields in Xiuyan,Liaoning,China using checkerboard sampling and field surveys.Results show that L.fabarum was first detected in crop fields around mid-June in 2009,after which numbers of this species rapidly increased to a peak around mid-July.After a subsequent decline in numbers,a second peak was observed in early August 2009.The temporal distribution of both parasitoids in 2010 was almost the same as in 2009 except that the second population peak was not so distinct.B.communis had increased in number by the end of June,with the population stabilizing from early June or mid-July until the end of August.In general,B.communis appeared later and was less abundant than L.fabarum.L.fabarum was also reared in nylon-net covered cages in fields under different treatments.The number of mummified aphids was greatest at a parasite（♀） /aphid ratio of 1∶100.These results provide some useful basic knowledge for the control of the soybean aphid.
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2011年第6期1631-1637,共7页
Chinese Journal of Applied Entomology
基金
公益性行业(农业)科研专项(201103022)
中国科学院知识创新工程重要方向项目(KSCX2-YW-NF-02)
河南省重点科技攻关项目(092102110183)
关键词
豆柄瘤蚜茧蜂
广双瘤蚜茧蜂
发生动态
罩笼繁育
大豆蚜
Lysiphlebus fabarum
Binodoxys communis
occurrence regularity
cage rearing
soybean aphid
