论文部分内容阅读
沙蒿金叶甲、枝柳条叶甲和白茨一条萤叶甲是西北荒漠草原的三大食叶性害虫。沙蒿金叶甲一年发生一代,以老熟幼虫在沙土中越冬,取食沙蒿生长点和叶片,为害率达84%。(?)柳条叶甲一年发生三代,以成虫在(?)柳枯枝落叶层下或沙土中越冬,取食(?)柳和红柳的叶片和嫩茎皮,为害率达90%。白茨一条萤叶甲一年发生二代,以成虫在沙土中越冬,取食白茨的叶片和生长点,为害率达81.4%。三种叶甲食性单一,食量大,喜干旱,不耐潮湿。天敌有蜥蝎、刺猬、寄生蝇、啮小蜂等。大发生时以2.5%溴氰菊脂5ml/亩,20%杀灭菊脂乳油10ml/亩,50%马拉硫磷80ml/亩,40%氧化乐果乳油100ml/亩进行地面或飞机超低量喷雾防治,或采用烟剂熏杀,均有良好效果。
Artemisia halodendron, branch wicker leaf beetle, and Beitizi Diabio are three leaf-eating pests of the desert steppe in the northwest. Artemisia selengensis occurs a generation a year, with mature larvae overwinter in the sand, feeding Artemisia growth points and leaves, damage rate of 84%. (?) Wicker leafhopper occurs three generations a year, with the adults overwintering (?) Willow litter layer or in the sand, feeding (?) Willow and red willow leaves and tender bark, the damage rate of 90%. A second generation of white-leaf Diabrotica occurs year by year in order to adult overwinter in the sand, feeding Whiteitz leaves and growing point, the damage rate of 81.4%. Three leaf armor a single food, food intake, like drought, intolerance of moisture. Natural enemies have lizards, hedgehogs, parasitic flies, bees and other small bees. Occurred at the time of the big 2.5% deltamethrin 5ml / mu, 20% decontamination EC 10ml / mu, 50% malathion 80ml / mu, 40% omethoate 100ml / mu ground or aircraft low Amount of spray prevention and treatment, or smoking smoked, have good results.