5种农药对梨小食心虫的室内毒力测定及田间药效评价
Indoor toxicity determination and field efficacy trials of several pesticides against Grapholita molesta in walnut production areas of Hotan County
魏杨 1陈国祥 1阿地力·沙塔尔 1买买托合提·吐孙 2田光宇1
作者信息
- 1. 新疆农业大学林学与风景园林学院,乌鲁木齐 830052
- 2. 新疆和田县林业和草原局,新疆和田 848000
- 折叠
摘要
[目的]筛选出对梨小食心虫具有较强防效的农药.[方法]采用生测法和喷雾法分别测定 5 种农药对梨小食心虫的室内毒力和评价田间药效.[结果]5%甲维盐·虱螨脲对梨小食心虫的 3 龄幼虫的毒力最高,其LC50值为4.12 mg/L,其次为10%高效氯氟氰菊酯、14%氯虫·高氯氟和 10%氯虫苯甲酰胺,LC50 值分别为8.23、15.14 和16.07 mg/L;25%甲维·灭幼脲毒力最低,LC50值为40.65 mg/L;10%氯虫苯甲酰胺1000倍稀释液和5%甲维盐·虱螨脲2000 倍稀释液对幼虫毒杀效果最好,处理 24h后,对幼虫校正死亡率均达到85%以上,72 h时达到100%.10%氯虫苯甲酰胺和5%甲维盐·虱螨脲的速效性最好,田间施药 1d后,防效能达到60%以上.施药后5d,防效分别为87.72%和82.46%,显著高于其他农药.[结论]10%氯虫苯甲酰胺和5%甲维盐·虱螨脲对和田县桃树栽植区梨小食心虫幼虫具有较好的控制效果.
Abstract
[Objective]In order to screen out pesticides with strong protection and extermination against pear psyllid based on scientific guidance for production.[Methods]In this experiment,the indoor toxicity and field efficacy of five pesticides against pear psyllid were determined by bioassay and spray method respectively.[Results]The experiment showed that the toxicity of 5%emamectin benzoate-lufenuron to the 3rd instar lar-vae of pear borer was the highest,and its LC50 value was 4.12 mg/L,followed by 10%lambda-cyhalothrin,14%chlorpyrifos-permethrin and 10%chlorantraniliprole.The LC50 values were 8.23,15.14 and 16.07 mg/L;25%emamectin benzoate-chlorobenzuron was the lowest toxic with an LC50 value of 40.65 mg/L;while 10%chlorantraniliprole 1,000 times and 5%emamectin benzoate-lufenuron 2,000 times were the most ef-fective in killing the larvae,and the corrected mortality rate of larvae reached more than 85%after 24 h and 100%at 72 h.10%chlorantraniliprole and 5%emamectin benzoate-lufenuron had the best rapid efficacy,and the efficacy of field spraying reached more than 60%after 1 d.The efficacy was 87.72%and 82.46%re-spectively at 5 d after application,which was significantly higher than other pesticides.[Conclusion]In con-clusion,10%chlorantraniliprole and 5%emamectin benzoate-lufenuron have good control effect on pear small heartworm larvae in peach planting area in Hotan County.
关键词
梨小食心虫/室内毒力测定/田间药效评价Key words
Grapholita molesta/indoor toxicity determination/field efficacy evaluation引用本文复制引用
基金项目
新疆维吾尔自治区重点研发计划(2021B02004)
新疆维吾尔自治区重点研发计划(2021B02004-1)
出版年
2024
国家科技期刊平台
NSTL
万方数据