摘要
在30℃下采用广口瓶密闭熏蒸法熏蒸48 h和72 h,测定青椒精油、红椒精油、一级麻素及二级麻素对玉米象Sitophilus zeamaisMotschu lsky成虫的熏蒸致死作用及LC50值。结果表明LC50值大小顺序为一级麻素>二级麻素>红椒精油>青椒精油。进一步研究熏蒸时间和温度对青椒精油及红椒精油熏蒸活性的影响,结果表明熏蒸时间越长,LC50值越小;温度越高,校正死亡率越大,表明2种花椒精油的持效期较长,在高温下能更好地发挥药效。
Adults of Sitophilus zeamais Motschulsky were fumigated in sealed jars with 4 prickly ash extractants for 48 or 72 h at 30℃. The highest LC50 was given by primary spicy element of the plant, followed in order by secondary element, red prickly ash essential oil and green prickly ash essential oil. In a further research of tire effect of fumigation duration and temperature on the fumigation activity of red and green prickly ash essential oils, LC50s decreased with increasing treatment duration and the corrected mortality increased with treatment temperature. These results showed that the lasting duration of the two essential oils are relatively long arid tbe efficacy of the prickly ash essential oils is better at higher temperature than at lower temperature.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2006年第6期966-970,共5页
Journal of Southwest Agricultural University
基金
国家"863"计划引导资助项目(2005AA001260)
关键词
花椒提取物
玉米象
熏蒸活性
prickly ash extractant
Sitophilus zeamais Motschulsky
htmigation activity
