青稞蚜虫及黄矮病发生规律及防治技术研究  

Studies on occurrence and controlling technology of yellow dwarf virus and naked barely aphids

作　　者：徐云[1] 木德伟 梅红[1] 林莉[1] 思红兵 陶宗仁 施晓群[1] 

机构地区：[1]云南省农业科学院植物保护研究所,云南昆明650205 [2]云南省迪庆藏族自治州植保植检站,云南迪庆674400

出　　处：《西南农业学报》2004年第1期41-44,共4页Southwest China Journal of Agricultural Sciences

基　　金：云南省"九五"科技攻关项目(95A4 9)

摘　　要：迪庆青稞蚜虫发生种类是禾谷缢蚜[Sitobiongraminis(Takahashi)]和麦无网长管蚜[Acyrthosiphondirhodum(Walker)],优势种是禾谷缢蚜,可周年繁殖。田间混合种群有翅蚜发生高峰在5月下旬,蚜量高峰在6月中旬。青稞黄矮病潜伏期为20～25d,发病高峰在6月中下旬。蚜虫种群数量与黄矮病发生程度成正相关。采用"治虫防病"的防治策略,重点控制青稞拔节期前蚜虫种群数量及切断病毒传播循环链的方法,控制了青稞黄矮病成灾的局面,青稞黄矮病的发病率控制到3%以下,产量增幅达到25%～60%,取得了显著的控病及增产效果。The result of survey showed that Sitobion graminis and Acyrthosiphon dirhodum were main pests of naked barely in Zhongdian county.The Sitobion graminis is predominant aphids species which were surveyed.Aphids grew and reproduced during a year in Zhongdian county.Occurrence peak of nerved aphids of mixture population was about the last 10 days of May. Occurrence peak of the population was about the middle 10 days of June. The latent period of yellow dwarf virus was about 20 to 25 days. Occurrence peak of yellow dwarf virus was about the last 20 days of June. The numbers of aphids population was directly proportioned to occurrence of yellow dwarf virus.Yellow dwarf virus occurrence rate was under 3% and the yield of naked barely was improved about 25% to 60% when the numbers of aphids populations were effectively controlled before elongation stage and the spread cycle chain of yellow dwarf virus was cut off.

关 键 词：青稞 黄矮病 蚜虫 发生规律 防治技术 

分 类 号：S435.123[农业科学—农业昆虫与害虫防治] S433[农业科学—植物保护]