【摘要】 甘肃省庆阳市庆城县2009年首次发生严重的河曲丝叶蜂灾情。为经济有效安全开展除治工作,作者研究了河曲丝叶蜂在庆阳县的发生规律并开展了防治试验。室内药剂对比试验结果:1.2%苦参碱.烟碱乳油1 000倍液、5%阿维菌素1 000倍液、3%高渗苯氧威1 500倍液和48%毒死蜱1 000倍液4种药剂施药20 h后防治效果均达到100%。野外防治试验表明:18%阿维.灭幼脲1 000倍液和1.2%苦参碱.烟碱乳油1 000倍液药效持久,为防治河曲丝叶蜂幼虫的首选。树干粘虫胶带粘杀和清耕树盘防治区域翌年虫口密度分别是未防治区域的79.42%和23.75%;蛹期清耕浅翻可有效控制害虫的繁衍危害。防治河曲丝叶蜂的最佳时期是幼虫孵化的盛末期和幼虫入土结茧的初冬。更多还原

【Abstract】 Nematus hequensis caused serious damage in Qingyang area in 2009.The experiment was made against the pest.The result of the chemical contrast test indoor showed the control effect of matrine·nicotine 1.2% EC 1 000 times,abamectin 5% 1 000 times,high permeation fenoxycarb 3% 1 500 times and chlorpyrifos 48% 1 000 times reached 100% 20 hours after the application.In the field experiment,abamectin·chlorbenzuron 18% 1 000 times and matrine·nicotine 1.2% EC 1 000 times had long-lasting effect,which were the first choice for the control of N.hequensis larva.The population density in the control area with the methods of adhesive belt around trunk and clean tillage were 79.42% and 23.75% of that in the non-treated area in the next year.The optimum control time was in the end of hatching peak and the beginning of the winter when the larva went into the soil cocooning.更多还原