炔螨特与溴虫腈联合杀螨活性的最佳配比筛选

浙江农业学报

炔螨特与溴虫腈联合杀螨活性的最佳配比筛选

（云南省农业科学院蚕桑蜜蜂研究所，云南蒙自 661101）

出版日期:2015-04-25 发布日期:2015-04-30

Screening of the optimal mixing proportion of propargite and chlorfenapyr for the joint acaricidal activity

（Institute of Sericulture & Apiculture， Yunnan Academy of Agricultural Sciences， Mengzi 661101， China）

Online:2015-04-25 Published:2015-04-30

摘要/Abstract

摘要： 为获取新的高效复配杀螨剂配方，采用共毒因子法和共毒系数法评价了炔螨特和溴虫腈不同配比混剂对朱砂叶螨的增效作用。结果表明，炔螨特与溴虫腈处理朱砂叶螨雌成螨后24 h的LC50分别为435.38和8.80 mg·L-1，炔螨特与溴虫腈混剂对朱砂叶螨具有明显增效作用的质量比为98.0∶2.0～95.4∶4.6，以96.5∶3.5和96.0∶4.0混合增效最明显，对朱砂叶螨处理后24 h的共毒系数分别为240.26和241.58，LC50分别为114.68和108.37 mg·L-1，其毒力分别是炔螨特毒力的3.80倍和402倍。该结果可为炔螨特与溴虫腈的混合使用防治害螨及复配剂开发应用提供依据。

关键词: 朱砂叶螨；杀螨剂；炔螨特, 溴虫腈；共毒系数；共毒因子

Abstract: To obtain a new high\|efficiency acaricide mixture， the joint acaricidal action of propargite and chlorfenapyr against Tetranychus cinnabarinus （Boisduval） and their optimal ratio were investigated by means of co\|toxicity factors and Suns co\|toxicity coefficients （CTC）. At 24 h post\|treatment， the LC50 of propargite and chlorfenapyr against T.cinnabarinus female adults were 43538 and 880 mg·L-1， respectively， and the synergistic mass ratios of propargite and chlorfenapyr ranged from 980∶20 to 954∶46. The best synergistic effect was discovered in the ratio of 965∶35 and 960∶40 （propargite∶chlorfenapyr） with the CTCs of 24026 and 24158， respectively， and LC50 of 11468 and 10837 mg·L-1， respectively， and the toxicities were 380 and 402 times of propargite， respectively. These findings would provide scientific basis for the mixing of propargite and chlorfenapyr against spider mites and for the development of new compounded acaricide.

Key words: Tetranychus cinnabarinus, acaricide, propargite, chlorfenapyr, co\, toxicity coefficient, co\, toxicity factor

谢道燕，杨振国*，达爱斯，倪婧. 炔螨特与溴虫腈联合杀螨活性的最佳配比筛选[J]. 浙江农业学报.

XIE Dao\|yan，YANG Zhen\|guo*， DA Ai\|si， NI Jing. Screening of the optimal mixing proportion of propargite and chlorfenapyr for the joint acaricidal activity[J]. .