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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。
In order to explore the technology of preventing and controlling wheat aphid at high temperature, the experiment set a series of short-time high temperature treatment (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) Sitobion avenae (Fabricius) Mortality of aphids and aphids. The results showed that at the same temperature, the mortality increased with the increase of treatment time, and the mortality increased with the increase of temperature at the same treatment time. At 45 ° C, it takes nearly 90 s to reach 100% mortality; at 70 ° C, the 100% mortality rate is only 5 s. The lethal temperature of wheat aphid decreased with the prolongation of treatment time, and the semilence of wheat aphid shortened with the rise of treatment temperature. Through the logistics model analysis found that in the same treatment, if the half-lethal temperature and lethality of the aphids were higher than the adult aphid.