不同药剂对马铃薯腐烂茎线虫的室内毒力测定及田间防效  

Indoor toxicity and field control efficacy test of different pesticides against Ditylenchus destructor Thorne

作　　者：白松林 霍宏丽 张冬梅 路奇 尤俊文 纪永祥 苗春乐 张朋飞 淡鹏飞 席先梅 BAI Songlin;HUO Hongli;ZHANG Dongmei;LU Qi;YOU Junwen;JI Yongxiang;MIAO Chunle;ZHANG Pengfei;DAN Pengfei;XI Xianmei(Inner Mongolia Agricultural University,Hohhot 010018,China;Inner Mongolia Academy of Agricultural&Animal Husbandry Sciences,Hohhot 010031,China;Otog Front Banner Agricultural and Animal Husbandry Technology Promotion Center,Otog Front Banner 016200,China;Ordos Agricultural and Animal Husbandry Technology Promotion Center,Dongsheng 010700,China;Xin′an Town Comprehensive Protection and Technology Promotion Center in Urad Front Banner of Bayannur,Urad Front Banner 015000,China)

机构地区：[1]内蒙古农业大学,内蒙古呼和浩特010018 [2]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031 [3]鄂托克前旗农牧业技术推广中心,内蒙古鄂托克前旗016200 [4]鄂尔多斯市农牧技术推广中心,内蒙古东胜010700 [5]乌拉特前旗新安镇综合保障和技术推广中心,内蒙古乌拉特前旗015000

出　　处：《北方农业学报》2023年第4期64-71,共8页Journal of Northern Agriculture

基　　金：内蒙古农牧业创新基金项目(2023CXJJN15);内蒙古自治区科技计划项目(2020GG0070)。

摘　　要：【目的】明确常用杀线剂对马铃薯腐烂茎线虫的室内毒力及田间防效,筛选具有高触杀活性的药剂。【方法】选取5种化学药剂利用直接触杀法分别对马铃薯腐烂茎线虫成虫和幼虫进行室内毒力测定,并对5种化学药剂、3种微生态制剂进行田间防效测定。【结果】稀释100倍、72 h后,10%噻唑膦颗粒剂对马铃薯腐烂茎线虫成虫和幼虫的毒力最高,LC50分别为2.201、2.182 mg/L;其次是41.7%氟吡菌酰胺悬浮剂,LC50分别为2.999、2.952 mg/L。5种化学药剂中,20%噻唑膦水乳剂防治效果最佳,为89.49%;41.7%氟吡菌酰胺悬浮剂增产率最高,为14.57%。3种微生态制剂中,芽孢杆菌TB918液体菌剂防治效果最佳,为48.20%;增产率最高,为5.51%。【结论】5种化学药剂对马铃薯腐烂茎线虫的校正死亡率均随着药剂浓度的增加和用药时间的延长而提高。化学药剂中,20%噻唑膦水乳剂对马铃薯腐烂茎线虫的田间防效最佳;微生态制剂中,芽孢杆菌TB918液体菌剂的田间防效最佳。【Objective】Clarify the indoor toxicity and field control efficacy of common nematicides on Ditylenchus destructor Thorne,to screen for pesticides with high contact-killing activity.【Methods】Direct contact killing method was used to determine the indoor toxicity of five chemical agents on the adult and larvae of Ditylenchus destructor Thorne.And field control efficacy of the five chemical agents and three microecological preparations was measured.【Results】After diluting for 100 times and applied for 72 hours,the toxicity of 10%thiazophos granules to the adults and larvae of Ditylenchus destructor Thorne was the highest,with LC50 of 2.201 and 2.182 mg/L,respectively,followed by 41.7%fluoropyram suspension,with LC50 of 2.999 and 2.952 mg/L,respectively.Among the 5 chemical agents,20%thiazophos aqueous emulsion had the best control efficacy of 89.49%,while 41.7%fluoropyram suspension had the highest yield increase rate of 14.57%.Among the three microecological preparations,Bacillus TB918 liquid bacterial preparation had the best control efficacy of 48.20%,and the highest yield increase rate of 5.51%.【Conclusion】The corrected mortality rate of the 5 chemical agents on Ditylenchus destructor Thorne increased with the increase of the chemical concentration and application time.20%thiazophos aqueous emulsion had the best field control efficacy against Ditylenchus destructor Thorne among the chemical agents,while the Bacillus TB918 liquid bacterial preparation had the highest field control efficacy among the microecological preparations.

关 键 词：马铃薯腐烂茎线虫 化学药剂 微生态制剂 室内毒力测定 防效 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]