青海省马铃薯甲虫调查与发生预测

马铃薯甲虫是全国农业植物检疫性有害生物名单中9种检疫性昆虫之一。该虫以新疆疫区为中心向其周边省份扩散蔓延的风险不断加剧,青海省已成为马铃薯甲虫入侵扩散的高危风险区,实施疫情的监测和防控势在必行。两年调查结果表明,青海省没有马铃薯甲虫发生。结合青海气候特点,应用有效积温法,推测结果表明:马铃薯甲虫在青海省主要农业区理论发生世代数为1-2代。

Investigaton and Occurrence Forecast to Leptinotarsa decemlineata(Say) in Qinghai Province

Leptinotarsa decemlineata（Say） is one of nine quarantine insects on plant quarantine pest list in China.The risk of diffusion and extension that the central was Xingjiang were continuously aggravated,Qinghai was the high risk district of Leptinotarsa decemlineata（Say）,so it was necessary to monitor and control pest epidemic.The investigation suggested that there was no occurrence on Leptinotarsa decemlineata（Say） in Qinghai.With effective accumulative temperature method combined Qinghai climate features,the result show that the theoretic number of occurrence generations to Leptinotarsa decemlineata（Say） was 1-2 generation in Qinghai.