摘要:為篩選防治杜鵑冠網蝽的無公害農藥,進行了6種農藥不同濃度的葉面噴霧防治藥效試驗。結果表明,施藥后7 d,10%氟鈴·毒死蜱EC、5%阿維菌素EC 500倍稀釋液、1 000倍稀釋液與1 500倍稀釋液防治效果間有極顯著差異,2.5%溴氰菊酯EC、2.5%吡蟲啉EC、2.5%高效氯氟菊酯EW、4.5%高效氯氟菊酯EC 2 000倍稀釋液、2 500倍稀釋液與3 000倍稀釋液防治效果間有極顯著差異。6種農藥均可用于防治杜鵑冠網蝽,各農藥的最佳用藥濃度為:10%氟鈴·毒死蜱EC 1 000倍稀釋液,5%阿維菌素EC 500倍稀釋液,2.5%溴氰菊酯EC、2.5%吡蟲啉EC、2.5%高效氯氟菊酯EW、4.5%高效氯氟菊酯EC 2 500倍稀釋液。
關鍵詞:無公害農藥;杜鵑冠網蝽;藥效試驗
中圖分類號:S436.8 文獻標識碼:A 文章編號:0439-8114(2011)20-4190-04
Experiment on the Control of Stephanitis pyriodes with Six Harmless Pesticides
LIU You-lian,HUANG Shou-chang
(Guangxi Eco-engineering Vocational & Technical College, Liuzhou 545004,Guangxi,China)
Abstract: In order to choose harmless pesticide spraying to control of Stephanitis pyriodes,experiments with six harmless pesticides in different concentrations were conducted. The test result indicated that 7 days after treated with pesticides,there were significant differences in 10% Hexaflumuron·chlorpyrifos EC, 5% Abamectin EC diluted 500 times, 1 000 times and 1 500 times, 2.5% Deltamethrin EC, 2.5% Imidacloprid EC, 2.5% Betacypermethrin EW, 4.5% Betacypermethrin EC diluted 2 000 times, 2 500 times and 3 000 times. Besides, six pesticides could be used to control Stephanitis pyriodes,and the best concentration for them were: 10% Hexaflumuron·chlorpyrifos EC dilute 1 000 times, 5% Abamectin EC diluted 500 times, 2.5%Deltamethrin EC, 2.5% Imidacloprid EC, 2.5% Betacypermethrin EW, 4.5% Betacypermethrin EC diluted 2 500 times.
Key words: harmless pesticide; Stephanitis pyriodes; experiment
杜鵑冠網蝽(Stephanitis pyriodes)屬半翅目(Hemiptera)網蝽科(Tingidae),分布于廣東 、廣西、浙江、江西、福建、遼寧、臺灣等地,是杜鵑(Rhododendron simsii)的重要害蟲之一[1]。杜鵑冠網蝽以成蟲、若蟲群集于杜鵑葉背主脈兩側刺吸汁液,造成葉面出現蒼白色斑點,葉背出現銹黃色蟲糞斑,影響觀賞,重者甚至出現植株干枯。在大部分地區杜鵑冠網蝽的防治主要還是使用有機磷農藥,一般采用氧化樂果、敵敵畏、亞胺硫磷、三硫磷等噴霧或呋喃丹顆粒劑根施[2,3]。這些農藥不適合在人群較為集中的廣場、公園、庭院等城市景觀林中應用,且氧化樂果為高毒農藥、呋喃丹是劇毒農藥,均屬禁限用農藥品種,因此尋找杜鵑冠網蝽防治的高效、低毒、低殘留的高毒替代農藥是當務之急。前人也進行了一些高毒替代農藥用于防治杜鵑冠網蝽的試驗,如阿維菌素、森得保、吡蟲啉、殺滅菊酯、聯苯菊酯、樂斯本、啶蟲咪等[1,4]。……