石榴蓟马防治药剂筛选及喷雾助剂对药剂的减量增效作用  

Screening of insecticides for thrips control in pomegranate and decrement and synergism effect of spray adjuvants

作　　者：杨小龙 杨俊 杨石有 张蕊 杨申 YANG Xiaolong;YANG Jun;YANG Shiyou;ZHANG Rui;YANG Shen(College of Biological and Agricultural Sciences,Honghe University,Key Laboratory for Research and Utilization of Characteristic Biological Resources in Southern Yunnan,Mengzi 661199,China)

机构地区：[1]红河学院生物科学与农学学院,云南省高校滇南特色生物资源研究与利用重点实验室,蒙自661199

出　　处：《植物保护》2024年第4期356-361,共6页Plant Protection

基　　金：云南省教育厅科学研究基金(2023J1117);红河学院科研基金博士专项(XJ22B16)。

摘　　要：为了筛选对石榴蓟马有效的防治药剂,同时评价添加喷雾助剂对药剂的减量增效作用,本研究开展了12种杀虫剂对石榴蓟马的田间防效试验,同时将450 g/L吡虫啉微乳剂常规用量减量10%、20%后添加0.05%的有机硅Silwet 408、矿物油、芦荟精油助剂,测定其对药液物理性能的影响及对石榴蓟马的田间防效,评价喷雾助剂的减量增效作用。结果表明:12种杀虫剂对石榴蓟马具有较好的田间防效,按照667m^(2)用量,450 g/L吡虫啉微乳剂10 mL、60 g/L乙基多杀菌素悬浮剂30 mL、10%多杀霉素悬浮剂20 mL、240 g/L虫螨腈悬浮剂40 mL、25%噻虫嗪水分散粒剂30 mL对石榴蓟马防效较高,可作为防治石榴蓟马的临时推荐药剂。添加3种喷雾助剂均能显著降低药液的表面张力、增大扩展直径并提高药液持留量,提高药剂对石榴蓟马的防效。相对常规用量,通过添加有机硅Silwet 408、矿物油助剂可使450 g/L吡虫啉微乳剂用量减量20%,添加芦荟精油可使药剂减量10%。生产上可通过向450 g/L吡虫啉微乳剂中添加3种喷雾助剂来达到对石榴蓟马减量增效的作用。This study aimed to screen insecticides for control thrips in pomegranate and evaluate the decrement and synergism effect of spray adjuvants.Field control effects of 12 insecticides against thrips in pomegranate were investigated,and the effects of adding 0.05%organosilicon Silwet 408,mineral oil and aloe essential oil additives to the imidacloprid 450 g/L ME with a reduction of 10%and 20%according to the conventional dosage,respectively,on physical properties and field control effect were determined.The results showed that 12 insecticides had good field control effects on thrips in pomegranate.Based on the dosage of 667 m^(2),10 mL of imidacloprid 450 g/L ME,30 mL of spinetoram 60 g/L SC,20 mL of spinosad 10%SC,40 mL of chlorfenapyr 240 g/L SC and 30 mL of thiamethoxa m^(2)5%WG have high control effects,and could be used as temporary recommended agents for controlling thrips in pomegranate.Added three kinds of spray additives could significantly reduce the surface tension,increase the expansion diameter and retention,and improve the control efficacy.Control efficacy of adding additives was significantly higher than that of their own single agent at the same concentration.By adding organosilicon Silwet 408 or mineral oil,the dosage of imidacloprid 450 g/L ME could be reduced 20%,and 10%by adding aloe essential oil,compared with the conventional dosage.In production,three spray adjuvants could be added to the imidacloprid 450 g/L ME for thrips control in pomegranate to realize decrement and synergism.

关 键 词：石榴蓟马 杀虫剂 喷雾助剂 减量增效 田间防效 

分 类 号：S436.6[农业科学—农业昆虫与害虫防治]