中国生物防治学报2017，Vol.33Issue(4)：496-503,8.DOI:10.16409/j.cnki.2095-039x.2017.04.009
球孢白僵菌与5种农药的相容性及其对韭菜迟眼蕈蚊的联合毒力
Compatibility of Beauveria bassiana with Five Pesticides and Their Cotoxicity to Bradysia odoriphaga
摘要
Abstract
We evaluated the compatibility of five pesticides (phoxim,thiamethoxam,clothianidin,λ-cyhalothrin and β-cypermethrin) commonly used against Bradysia odoriphaga with a high virulence strain of Beauveria bassiana YB8,and determined their co-toxicity against B.odoriphaga in the laboratory.Results showed that the pesticides had different effects on the growth of B.bassiana at different concentrations.Thiamethoxam and clothianidin had no significant effect on the conidia germination at the tested concentrations.Both of them promoted the growth of B.bassiana 5 days after treatment,which increased with the concentration increase (inhibition rate were-2.26％ to-15.69％),while inhibited the growth ofB.bassiana 10 days after treatment,with the inhibition rate of 0.29％ to 8.33％.λ-cyhalothrin (at 16.7 rg/L) and β-cypermethrin (at 30 mg/L) reduced conidia germination rate (86.87％,86.82％),while at low concentrations (at 1.67 mg/L and 3 mg/L,respectively) promoted conidia germination rate (by 24.96％ and 4.10％,respectively).Both λ-cyhalothrin and β-cypermethrin at different concentrations had effect on the growth ofB.bassiana,the inhibition rates of λ-cyhalothrin to the colony growth 5 and 10 days after treatment were the lowest (-32.64％ and-13.11％,respectively) at low concentration (3 mg/L).Phoxim inhibited the growth of B.bassiana significantly in a dose dependent manner.The results of bioassay against B.odoriphaga showed that the LC5o values of combination B.bassiana with insecticides were lower than that of insecticide alone,and LT50 values of combination was shorter than that of B.bassiana alone.It is recommended that thiamethoxam and clothianidin can be combined with B.bassiana for control ofB.odoriphag,while phoxim,λ-cyhalothrin and β-cypermethrin can be used only at low concentration.关键词
球孢白僵菌/韭菜迟眼蕈蚊/杀虫剂/毒力Key words
Beauveria bassiana/Bradysia odoriphaga/insecticide/virulence分类
农业科技引用本文复制引用
范晓杰,王琰,李晓莉,周仙红,张思聪,庄乾营,于毅..球孢白僵菌与5种农药的相容性及其对韭菜迟眼蕈蚊的联合毒力[J].中国生物防治学报,2017,33(4):496-503,8.基金项目
公益性行业(农业)科研专项(201303027) （农业）
山东省自然科学基金(ZR2014CQ049) （ZR2014CQ049）
