摘要
为了探索高温防控麦蚜的技术,本实验设置系列短时间高温处理(45℃,30、40、50、60、70、80、90 s;50℃,5、10、15、20、25、30、35、40 s;55℃,5、10、15、20 s;60℃,5、10、15 s;65℃,5、10 s;70℃,5 s),测定了麦长管蚜Sitobion avenae(Fabricius)若蚜及成蚜的死亡率。结果表明:在同一温度下,随着处理时间的延长,麦长管蚜的死亡率上升;在相同处理时间下,随着温度的升高,其死亡率上升。在45℃条件下,需要近90 s其死亡率才能达到100%;在70℃下,100%死亡率仅需5 s。麦蚜的半致死温度随着处理时间的延长而降低,麦蚜的半致死时间随着处理温度的上升而缩短。通过logistics模型分析发现,在相同处理下,若蚜的半致死温度和半致死时间均高于成蚜。
Detailed experiments were conducted to explore the effects of brief exposure to extreme high-temperature （45℃ ,30,40,50,60,70,80,90 s;50℃ ,5,10,15,20,25,30,35,40 s;55℃ ,5,10,15,20 s;60℃ ,5,10,15 s;65℃ ,5,10 s;70℃ ,5 s）on wheat aphids Sitobion avenae （Fabrieius） and to measure mortality rates of adults and nymphs. Mortality rates were found to increase with increasing temperature and duration of exposure. The time to complete death of all test animals was 90 s at 45℃ , but just 5 s at 70℃. The half-lethal temperature decreased with increased treatment time and the half-lethal time decreased with increasing temperature. A logistic model indicates that, under the same conditions, the half-lethal temperature and the half-lethal time of adults are higher than those of nymphs.
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2013年第6期1594-1599,共6页
Chinese Journal of Applied Entomology
基金
公益性行业(农业)科研专项(201103022)
关键词
麦长管蚜
高温
死亡率
半致死温度
半致死时间
Sitobion avenae, high temperature, mortality rate, half-lethal temperature, half-lethal time
