25％丁醚脲·唑虫酰胺悬浮剂对茶小绿叶蝉的室内活性及田间防效评价
Laboratory bioactivity test and field efficacy of diafenthiuron·tolfenpyrad 25％suspension concentrate against Empoasca pirisuga Matsumura
侯超群 1何康丽 1杨景涵 2韦诺 1李猛 3冯建国1
作者信息
- 1. 扬州大学植物保护学院,江苏扬州 225009
- 2. 扬州大学植物保护学院,江苏扬州 225009;山西奇星农药有限公司,山西运城 044000
- 3. 山西奇星农药有限公司,山西运城 044000
- 折叠
摘要
为评估25％丁醚脲·唑虫酰胺悬浮剂对茶树茶小绿叶蝉的防治效果,采用共毒系数法测定98％丁醚脲和95％唑虫酰胺不同配比对茶小绿叶蝉的联合毒力,通过25％丁醚脲·唑虫酰胺悬浮剂按有效成分112.5、150.0、187.5 g·hm-2,25％丁醚脲悬浮剂750.0 g·hm-2,以及30％唑虫酰胺悬浮剂90.0 g·hm-2进行两地田间药效对比试验.结果表明:丁醚脲与唑虫酰胺以2:3比例混配时共毒系数最高,为144.21.25％丁醚脲·唑虫酰胺悬浮剂速效性良好,药后1 d,长安村田间试验防效为67.55％～76.87％,岭下村田间试验防效为86.24％～93.33％;持效性优异,药后7 d,长安村防效为89.50％～95.29％,岭下村防效为85.53％～92.74％.综上,25％丁醚脲·唑虫酰胺悬浮剂对茶小绿叶蝉防效较好,茶叶生产中推荐施药剂量按有效成分112.5～187.5 g·hm-2的25％丁醚脲·唑虫酰胺悬浮剂兑水喷雾防治.
Abstract
The study aims to evaluate the field efficacy of diafenthiuron·tolfenpyrad 25％suspension concentrate(SC)against Empoasca pirisuga Matumura.The combined toxicity of 98％diafenthiuron and 95％tolfenpyrad at different ra-tios to E.pirisuga Matsumura was determined by the method of co-toxicity coefficient,at the same time,field efficacy comparison tests between two places were carried out with diafenthiuron·tolfenpyrad 25％SC 112.5,150.0 and 187.5 g·hm-2,diafenthiuron 25％SC 750.0 g·hm 2 and tolfenpyrad 30％SC 90.0 g·hm-2.Highest co-toxicity coefficient was 144.21 in the mixture of diafenthiuron and tolfenpyrad at the ratio of 2:3.The diafenthiuron·tolfenpyrad 25％SC can control E.pirisuga Matumura rapidly and had great duration,the field efficacy results in Chang'an village and Lingx-ia village showed that the field efficacy of diafenthiuron·tolfenpyrad 25％SC was 67.55％-76.87％and 86.24％-93.33％after applying 1 d,and the field efficacy was 89.50％-95.29％and 85.53％-92.74％after applying 7 d.The results show that diafenthiuron·tolfenpyrad 25％SC has good field efficacy on E.pirisuga Matumura.In tea produc-tion,spraying diafenthiuron·tolfenpyrad 25％SC with the dose of 112.5-187.5 g·hm-2 was recommended to control E.pirisuga Matumura.
关键词
茶小绿叶蝉/丁醚脲/唑虫酰胺/室内活性/田间防效Key words
Empoasca pirisuga Matumura/diafenthiuron/tolfenpyrad/laboratory bioactivity/field efficacy引用本文复制引用
基金项目
江苏省研究生实践创新计划项目(SJCX23_1980)
出版年
2024
国家科技期刊平台
NSTL
万方数据