二星瓢虫对桃粉大尾蚜的功能反应

二星瓢虫Adalia bipunctata（L.）的功能反应呈Holling Ⅱ型,其成虫在一天之内的捕食上限为376.87头,捕食1头桃粉大尾蚜Hyaloptera amygdali Blanchard仅需3分49秒,其捕食潜能很大。     

桃蚜和桃粉蚜对杀虫剂的敏感性测定

用微量点滴法对山西省晋中市太谷县桃树上桃蚜及桃粉蚜进行了敏感性测定,结果发现不同药剂的毒力水平不同。其测定试验结果为:吡虫啉、灭多威和阿维菌素的毒力水平桃蚜比桃粉蚜高,溴氰菊脂的毒力水平桃粉蚜比桃蚜高;其中,桃粉蚜的敏感性测定结果为吡虫啉灭多威阿维菌素溴氰菊脂,桃蚜的测定结果为吡虫啉溴氰菊脂灭多威阿维菌素。     

花角蚜小蜂防治松突圆蚧技术的应用

应用花角蚜小蜂防治松突圆蚧面积达１００多万ｈｍ＾２,全面覆盖松突圆蚧疫区范围。放蜂定居成功率达８５％以上,花角蚜小蜂普遍形成自然种群,有效地减缓松突圆蚧的扩散速度及将松突圆蚧控制在有虫不成灾的范围。     

三突花蛛对桃小叶蝉和桃粉蚜的选择效应研究

三突花蛛 ( Misumenops tricuspidatus ( Fabricius) )属蛛形纲 ( Arachnida)蟹蛛科( Thomisidae) ,经野外调查发现 ,是泰山上桃树 ( Prunus persica Sieb et Zucc.)害虫的重要天敌之一[1,2 ] ,能捕食多种害虫 ,如桃小叶蝉 ( Erythroneura sudra ( Distant) )、桃粉蚜( Hyalopterus amygdali Blanchard)、朝鲜毛球蚧 ( Didesmococcuskoreanus Borchs.)等[3] 。前两种是早春常见的害虫 ,而活动早的天敌以三突花蛛为主。害虫与捕食性天敌之间的关系 ,常用的数学模型有 Holling模型等[4～ 8] 。但对多数树种 ,往往同时存在两种或两种以上…     

长角异鞭蚜小蜂寄生杨圆蚧的研究

该文通过对长角异鞭蚜小蜂;Archenomus longicornis; 与杨圆蚧;Quadraspidiotus gigas;在发生期上具有吻合性的研究,说明了存在利用该寄生蜂防治杨圆蚧的可能性。     

飞机撒放花角蚜小蜂防治松突圆蚧试验

飞机撒放花角蚜小蜂防治松突圆蚧,每架次装种蜂枝条200把,在松突圆蚧疫区以160～180公里/小时的航速作业,每13秒钟投放一把,每把控制面积33.3公顷。试验共作业飞行6架次,防治面积4万公顷,小蜂定居成功率达100%,半年后投放点中心区的平均寄生率达19.8%。每公顷防治成本2.25元,比地面人工挂枝放蜂速度快,成本低,效果好。     

寄生小蜂对小青×黑杨树皮及杨圆蚧挥发油的行为反应

Four-armed airflow olfactometer was used to determining the foraging behavior ofPteroptrix longgiclava (Girault) (Hymenoptera: Aphelinidae) andEncarsia gigas (Tshumakova) (Hymenoptera: Aphelinidae) to the essential oils which emitted from the healthy bark ofPopulus pseudo-simonii×P. nigra, the infested bark injured byQuadraspidiotus gigas (Thiem & Gerneck), the body and scale of fixed 1st-instar-nymph ofQ. gigas. The results from these experiments showed that the volatile oils produced from the injured bark and from the scale of fixed 1st-instar-nymph had a higher attractive ability to female adults of the two species of wasps. The essential oil produced from the scale of the pest at dosages of 3–7 μL and the essential oil emitted by injured bark at dosages of 5–9 μL had a stronger alluring effect on the host searching behavior ofPteroptrix longgiclava. The essential oil from the body of fixed 1st-instar-nymph ofQ. gigas also had certain effect on the host locating effort ofPteroptrix longgiclava andEncarsia gigas. Those two wasps did not shown any reaction to the essential oil produced by the healthy bark of poplar. Foundation item: This paper was supported by National Natural Science Foundation of China (39970620) and the “TRAPOYT” Biography: CHI De-fu (1962-), male, Ph.D., Professor in Northeast Forestry University, Harbin 150040, P.R. China Responsible editor: Chai Ruihai     

观赏桃花桃粉蚜的发生及防治

桃粉蚜又名桃大尾蚜，是观赏桃花常见的主要虫害之一，同时也危害李、杏、梅及禾本科植物。观赏桃树受害后，叶片畸形、卷缩、萎蔫，果实发育不良甚至枝梢干枯，同时排泄蜜露，诱发烟煤病，严重影响桃树的生长、发育和观赏价值。形态特征成虫分有翅和无翅2种类型，以无翅蚜为多。无翅蚜体长2毫米左右，绿色体表被有蜡状白粉。有翅蚜体型较无翅蚜小，头部及胸部为淡黑色，腹部黄绿色被有白粉，触角较体短。卵椭圆形。发生规律每年发生10余代。以卵在枝条和芽缝里越冬。来年3月无翅雌蚜出现，初期群集芽上，待展叶和新梢抽生后，即密集在叶背…