茚虫威和氯虫苯甲酰胺具有高效、持久的杀虫活性,对天敌昆虫及哺乳动物安全,在农作物害虫防治中被广泛应用。为明确茚虫威和氯虫苯甲酰胺在柞园及柞园周边农田使用对柞蚕生产的影响,采用喷施法测定2种杀虫剂对柞蚕的急性毒性、熏蒸毒性...茚虫威和氯虫苯甲酰胺具有高效、持久的杀虫活性,对天敌昆虫及哺乳动物安全,在农作物害虫防治中被广泛应用。为明确茚虫威和氯虫苯甲酰胺在柞园及柞园周边农田使用对柞蚕生产的影响,采用喷施法测定2种杀虫剂对柞蚕的急性毒性、熏蒸毒性和残毒期。结果表明,茚虫威和氯虫苯甲酰胺对柞蚕3龄幼虫的72 h LC50分别为0.465×10^-3、15.567×10^-3 mg/L,属于剧毒级;熏蒸毒性极低,全茧量和茧层量与对照差异不显著;2种药剂残毒期极长,均超过30 d。鉴于2种药剂对柞蚕具有很强的急性毒性和极长的残毒期,应当禁止在柞园内使用。展开更多
Microcapsules of sex pheromone of the diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae) were synthesized through complex coacervation using gelatin and gum arabic as wall-forming materials. The en...Microcapsules of sex pheromone of the diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae) were synthesized through complex coacervation using gelatin and gum arabic as wall-forming materials. The encapsulated pheromone released from these microcapsules into the air was monitored over six weeks in the field. Results of a field trial show that the attractiveness of microcapsules was superior to that of rubber septa loaded with the same amount of pheromone. The mating disruption efficiency of the pheromone treatment was estimated through comparing numbers of moths captured in pheromone-baited traps placed in pheromone treatment fields and pesticide treatment fields. The estimated mating disruption efficiency of the pheromone treatments ranged from 76.94% to 98.67% during the season. This study shows that pheromone microcapsules might provide a new method for P. xylostella control.展开更多
文摘茚虫威和氯虫苯甲酰胺具有高效、持久的杀虫活性,对天敌昆虫及哺乳动物安全,在农作物害虫防治中被广泛应用。为明确茚虫威和氯虫苯甲酰胺在柞园及柞园周边农田使用对柞蚕生产的影响,采用喷施法测定2种杀虫剂对柞蚕的急性毒性、熏蒸毒性和残毒期。结果表明,茚虫威和氯虫苯甲酰胺对柞蚕3龄幼虫的72 h LC50分别为0.465×10^-3、15.567×10^-3 mg/L,属于剧毒级;熏蒸毒性极低,全茧量和茧层量与对照差异不显著;2种药剂残毒期极长,均超过30 d。鉴于2种药剂对柞蚕具有很强的急性毒性和极长的残毒期,应当禁止在柞园内使用。
基金Supported by the Innovation Program of the Chinese Academy of Sciences (Grant No. KSCX2-1-02)
文摘Microcapsules of sex pheromone of the diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae) were synthesized through complex coacervation using gelatin and gum arabic as wall-forming materials. The encapsulated pheromone released from these microcapsules into the air was monitored over six weeks in the field. Results of a field trial show that the attractiveness of microcapsules was superior to that of rubber septa loaded with the same amount of pheromone. The mating disruption efficiency of the pheromone treatment was estimated through comparing numbers of moths captured in pheromone-baited traps placed in pheromone treatment fields and pesticide treatment fields. The estimated mating disruption efficiency of the pheromone treatments ranged from 76.94% to 98.67% during the season. This study shows that pheromone microcapsules might provide a new method for P. xylostella control.
