【摘要】 麦长管蚜是浙江省稻、麦的重要害虫。据在临安观察,一年发生20代左右,冬季以无翅胎生雌蚜、若蚜在麦子心叶及叶鞘内侧和杂草中越冬。翌年初夏从麦田迁至各种农作物及杂草上繁殖,9月间则自杂草迁向迟熟晚稻,至11月间又迁回麦田和杂草上越冬。因此,及时清除杂草具有十分重要的意义。 麦长管蚜的杂草寄主,共有5科,27属,35种,其中以鹅观草、棒头草等为重要寄主。 农药防治以40％乐果1000～2000倍;50％马拉松1000～1500倍;40％乐果乳剂加50％敌敌畏(1:1)1000～2000倍;40％乐果1000倍及10％除虫菊酯1000～6000倍效果显著,其中以10％的除虫菊酯效果最好。更多还原

【Abstract】 Macrosiphum avenae Fabricius is one of the extremely infectious insect pest of rice and wheat in Zhejiang.According to observations made in Lin-an county of Zhejiang,It repcoduced about 20 generations a year both the adult and the nymph stages of the aphids overwintered on the stems of wheats or weeds is the fields.Early in summer in the following year,the aphids migrated to various kinds of crops and weeds as their secondary hosts to reproduce,then they moved from weeds to the late-riped late-rice in mid-september.In mid-november they moved back to young wheats plants and weed to overwinter.Thus it is of great significance to get rid of weeds in time.They feeding have been found as on 5 families,27 genera,35 species of weeds,among them,Roegneria kamoji,Polypogon fugax Nees ex steud,Poa annua.Setaria viridis,Setaria faberii,Bromus remotiflorus,Fchino-chloa crusgalli etc,are the main hosts.As the chemical control of the aphids,it is now recommeded as followss 40% Rogon 1/1000-2000;50% malathion 1/1000-1500;40% Rogon and 50% DDVP(1:1)1000-2000x;10% Decis 1/1000-6000.All these insectisides are effective,but 10% Decis is the best for controlling the aphids.更多还原