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近年来二突异翅长蠹对安徽省储藏期柳编原材料——杞柳枝条的危害日趋严重。为了有效防控该虫,对其生物学特性和熏蒸技术进行研究。实验室饲养观测与仓库调查结果表明,该虫在安徽省1年发生2代,以老熟幼虫在被害柳条内部越冬。翌年3月下旬越冬幼虫开始活动为害,4月下旬开始化蛹,5月中旬成虫大量出现,并于5月下旬产卵。第1代幼虫于6月上旬孵化,8月上旬幼虫开始化蛹,8月中旬羽化为成虫,8月下旬成虫开始产卵,9月上旬第2代幼虫孵化,并继续为害柳条,一直持续到11月新柳条收获后。用56%磷化铝片剂和80%敌敌畏乳油在密封袋中进行熏蒸试验。结果表明,磷化铝的熏杀效果更好,12 g.m-3剂量熏蒸72 h后各虫态的死亡率可达到100%,以幼虫对磷化氢最敏感。因此,熏蒸防治要抓住越冬代幼虫活动期,即在每年的3月底至4月初,用56%磷化铝片剂12 g.m-3熏蒸72 h以上为宜。
In recent years, the two spiders Hemiptera on the storage period in Anhui Liubian raw materials - Willow branches increasingly serious harm. In order to effectively control the insect, its biological characteristics and fumigation technology research. Laboratory feeding observations and warehouse survey results showed that the pest occurred in Anhui Province for two generations a year, with mature larvae wintering within the victim wicker. The overwintering larvae began to act in late March next year, pupation began in late April, adults appeared in large numbers in mid-May, and lay eggs in late May. The first generation larvae hatch in early June. Larvae begin to pupate in early August and emerge as adults in mid-August. Adult adults begin to lay eggs in late August. The second generation larvae hatch in early September and continue to harm the wicker, November new wicker after harvest. Fumigation tests were conducted in sealed bags with 56% aluminum phosphide tablets and 80% dichlorvos. The results showed that the aluminum phosphide was better smoked and smoked. After 72 h of fumigation with 12 g.m-3, the death rate of each pollens reached 100%, and larvae were the most sensitive to phosphine. Therefore, fumigation control should seize the active period of overwintering larvae, that is, in the end of March to the beginning of April, 56% aluminum phosphide tablets 12 g.m-3 fumigation more than 72 h is appropriate.