摘要
为探索玉溪烟区烟草夜蛾的为害规律及防控对策,在自然条件下利用性诱剂对斜纹夜蛾、小地老虎、烟青虫进行多年诱捕监测,并对诱蛾量与气象因子进行了相关分析,结果表明,玉溪烟区斜纹夜蛾、小地老虎在冬季能正常羽化,诱蛾量为斜纹夜蛾>小地老虎>烟青虫;斜纹夜蛾最佳诱蛾期为4月下旬—5月下旬和10—11月,其次是6—9月;小地老虎最佳诱蛾期为2—3月上旬、5月中旬—6月中旬和12月下旬;烟青虫有效诱蛾期主要集中在5—6月。诱蛾量与气象因子相关分析表明,斜纹夜蛾诱蛾量随气温的升高而增多;小地老虎诱蛾量随日照时数增加而增多,随空气相对湿度和日最低气温升高而降低;烟青虫诱蛾量随日平均气温、日最低气温升高和降雨量增加诱蛾量增多。防控策略:防治斜纹夜蛾于整地理墒或烟苗移栽后在田间安置诱捕器诱杀,8月中旬(中部叶采烤期)结束;防治小地老虎于前茬小春作物花期(2—3月上旬)在田间安置诱捕器诱杀,5月底至6月上旬(烟株团棵期)结束;防治烟青虫于整地理墒后在田间安置诱捕器诱杀,6月底至7月上旬(烟株封顶7 d后)结束。
To understand the noctuidae pest dynamics of tobacco in Yuxi and to devise control strategy, sex pheromone traps were used to monitor their population dynamics for 3 years. The targeted pests included Spodoptera litura Fabricius, Agrotis ypsilon Rottemberg and Helicoverpa assulta Guenèe. In the winter, adult emergence of S. litura and A. ypsilon occurs in Yuxi, trap catches of the species ranked from high to low: S. litura, A. ypsilon and H. assulta. The peak periods of S. litura are during late April to late May and October to November, and minor peaks occur during June to September. The peak periods of A. ypsilon are during February to early March, mid-May to mid-June, and late December. And the peak period of H. assulta is during May to June. Trap catches were correlated to climatic factors, which show that the S. litura catches increased with rise in temperature, A. ypsilon catches increased with increase in sunshine duration and decreased with increases in relative humidity and the lowest temperature, H. assulta catches increased with increase in average temperature, lowest temperature and rainfall. To effectively control these noctuidae pests, sex pheromone traps should be established for S. litura after soil preparation and ridging or after transplanting of tobacco seedlings and until the middle of August(cutters harvesting period), for A. ypsilon from February to early March and until the end of May to early June(rosette stage), and for H. assulta after soil preparation and ridging and until the end of May to early June(7 d after topping).
出处
《中国生物防治学报》
CSCD
北大核心
2015年第1期21-27,共7页
Chinese Journal of Biological Control
基金
云南省烟草专卖局(公司)科技项目(2012YN04
2010YN19)
国家烟草专卖局科技项目(110200902065)
关键词
性诱剂
监测
烟草夜蛾
发生动态
防控对策
sex pheromone
monitoring
tobacco noctuid
dynamics
control strategy