15%哒·阿维热雾剂的配制及其对橡胶六点始叶螨的药效  

Development on Abamectin-pyridaben HN and Its Control Effect to Eotetranychus sexmaculatus

作　　者：邬国良[1] 郑服丛[1] 蔡笃程[1] 黎忠诚[1] 张方平[2] 符悦冠[2] 

机构地区：[1]海南大学环境与植物保护学院,海南儋州571737 [2]中国热带农业科学院环境与植物保护研究所,海南儋州571737

出　　处：《热带作物学报》2010年第12期2255-2259,共5页Chinese Journal of Tropical Crops

基　　金：国家科技支撑计划(No.2007BAD48B04);国家天然橡胶产业技术体系建设项目(No.nycytx-34);海南大学重点项目(No.hd09xm20)资助

摘　　要：通过选用合适的原药、助剂、工艺,配制了闪点高、粘度适中、低毒、冷热贮稳定性好且可用于喷烟、喷雾及超低量喷雾的15%哒.阿维菌素多功能热雾剂,并测定热雾剂对橡胶六点始叶螨的毒力与药效。热雾剂对雌成螨的毒力回归方程为Y=5.738 3＋2.285 6x,LC50为0.475 3μg/mL,幼螨LC50为0.190 4μg/mL,卵LC50为0.921 3μg/mL。苗圃防治试验持效期达35 d以上。施药量为3 000 mL/hm2时,小区试验药后15 d防效达90.28%。经过7 a的大田防洽试验,表明15%哒.阿维热雾剂对橡胶六点始叶螨有良好的控制作用。当高峰前期每百片胶叶害螨达30头以上时,采用热雾剂2 2503 000 mL/hm2进行预防性施药,防治效果达81.2%以上,全年施药1次可控制害螨的发生。Abamectin·pyridaben hot fogging concentrate including formula selection as well as adjuvants,solvent,latent solvent,storing stability etc were reported in this paper,which could be used for thermal fogger,sprayer and ULV sprayer.Toxicity of abarmectin·pyridaben HN to E.sexmaculatus was determined with slide-slip method.The results showed considerable high insecticidal activity to the target mite.The virulence regression equation on adult female mites was y=5.738 3＋2.285 6x,and LC50 of adult female mites,larva,eggs was 0.475 3,0.190 4,0.921 3 μg/mL respectively.The control effect duration of orthogonal test was 35 days in the nurseries of rubber tree.Field plot experiment showed that the mite population was reduced 90.28%.On the 15th day after treatment of 3 000 mL/hm2,field experiment of 20 000 hm2 carried out to control E.sexmaculatas on rubber tree between 2001 and 2009 indicated remarkable control effect.Application of HN with 2 250～3 000 mL/hm2 was found to be most effective before the population reached its peak.

关 键 词：阿维菌素 哒螨灵 橡胶树 六点始叶螨 热雾剂 药效 

分 类 号：S482.5[农业科学—农药学] S482.91[农业科学—植物保护]