不同药剂防控稻水象甲幼虫试验

The Control Efficiency of Different Insect Pesticides against Lissorhoptrus oryzophilus Larvae

[目的]试验研究5种杀虫剂不同剂量对稻水象甲幼虫的防治效果,筛选5%丁硫克百威颗粒剂的替代药剂。[方法]进行盆栽、田间小区试验。[结果]20%呋虫胺可溶粒剂90.00、120.00、150.00 g a.i./hm^2,0.5%噻虫胺颗粒剂225.00、300.00 g a.i./hm^2,4%吡虫·毒死蜱颗粒剂2400.00 g a.i./hm^2,50%氟啶虫胺腈水分散粒剂150.00、187.50 g a.i./hm^2处理防控稻水象甲幼虫,药后15 d防效均在70%以上。[结论]20%呋虫胺可溶粒剂、0.5%噻虫胺颗粒剂、50%氟啶虫胺腈水分散粒剂、4%吡虫·毒死蜱颗粒剂可以作为5%丁硫克百威颗粒剂的替代药剂,防控稻水象甲幼虫,建议在生产中交替使用。

[Aims] The experiment aims to screen out better alternative pesticides of 5% Ding Like Budweiser to control Lissorhoptrus oryzophilus larvae from five pesticides. [Methods] Pot and field experiment were used to evaluate control efficiency for five insect pesticides against L. oryzophilus larvae. [Results] Our experiments showed that dinotefuran 20% SG （90.00, 120.00, 150.00 g a.i./ha）, clothianidin 0.5% GR （225.00, 300.00 g a.i./ha）, imidacloprid chlorpyrifos 0.4% GR（2400 g a.i./ha）, sulfoxaflor 50% WG （150.00, 187.50 g a.i./ha） could control L. oryzophilus larvae efficiently, and the efficiency after 15 days were above 70%. [Conclusions] Therefore, dinotefuran, clothianidin, imidacloprid chlorpyrifos and sulfoxaflor could be used as alternative pesticides for L. oryzophilus larvae control.