摘要
旨在明确烟粉虱对高温和低温胁迫的响应,以期制定适合陕西省的生态防控策略。设置不同温度及时间的处理,研究烟粉虱不同虫态对高温及低温胁迫的响应。结果表明:卵、若虫、蛹、成虫死亡率均随着低温胁迫温度的降低而增高,在6~0℃,随着温度下降死亡率升高幅度显著低于0~-6℃下降幅度。其中蛹的抗寒性最强,卵次之,若虫和成虫抗寒性最差。在34~44℃,烟粉虱卵、若虫、蛹、成虫的死亡率随着胁迫温度的升高总体呈明显上升趋势。高温胁迫时间与烟粉虱各虫态的死亡率呈显著正相关关系,高温胁迫时间越长,死亡率越高。说明烟粉虱对高温和低温胁迫响应均较敏感,由此提出主攻棚内,兼顾棚外的防治策略,即冬季阻断烟粉虱进棚,夏季采用高温闷杀方法综合防治烟粉虱。
To clarify the response of Bemisia tabaci to high and low temperature stress,and to formulate and take measures for ecological control.We studied the response of different insect states of Bemisia tabaci to high and low temperature stress.The experimental results indicated that the mortality of eggs,nymphs,pupae and adults of Bemisia tabaci increased with the decrease of low temperature stress.The decrease of survival rate in temperature ranging from 6 to 0℃was significantly lower than that in temperature ranging from 0 to-6℃.The cold resistance of pupae was the strongest,followed by eggs,nymphs and adults.The mortality rates of eggs,nymphs,pupae and adults of Bemisia tabaci increased significantly with the increase of temperatures from 34 to 44℃.There was a significant positive correlation between the time of high temperature stress and the mortality rate of each insect state of Bemisia tabaci.The longer the time of high temperature stress was,the higher the mortality rate was.In conclusion,Bemisia tabaci was sensitive to both high temperature and low temperature stress,which provides theoretical support for clarifying the possibility of Bemisia tabaci overwintering in Shaanxi and the feasibility of high temperature suffocation control.
作者
杨艺炜
刘晨
任平
常青
李英梅
YANG Yiwei;LIU Chen;REN Ping;CHANG Qing;LI Yingmei(Bio-Agriculture Institute of Shaanxi,Xi’an 710016,China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2021年第5期782-788,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
西安市农业科技创新工程项目(20193060YF048NS048,201806116YF04NC12)
陕西省科学院平台建设项目(2019k-05)。
关键词
烟粉虱
高温胁迫
低温胁迫
生态防控
Bemisia tabaci
High temperature stress
Low temperature stress
Eecological control
