1%联苯·噻虫嗪GR根施防治椰心叶甲田间药效初探

Preliminary Study on the Field Efficacy of 1% Biphenyl Thiamethoxam GR Root Application in the Control of Brontispa longissima Gestro

椰心叶甲是棕榈科植物重要害虫,其危害性受到各界的关注和重视,防止椰心叶甲扩散蔓延对确保槟榔产业健康可持续发展至关重要。为探索椰心叶甲的防治方法和效果,测定了1%联苯·噻虫嗪GR根施对槟榔椰心叶甲的田间防治效果。结果表明,1%联苯·噻虫嗪GR对椰心叶甲幼虫、成虫有较好的防治效果,同时具有保叶效果。在有效成分100~200g/株剂量下,施药后25d对椰心叶甲的防治效果为88.57%~97.14%,施药后50d对受害株的防治效果为91.43%~97.14%。1%联苯·噻虫嗪GR为高效低毒杀虫剂,具有较强的内吸传导作用,根部施药防治椰心叶甲具有较大的应用价值。

The coconut leaf beetle(Brontispa longissima Gestro) is an important pest of palm plants, and its harmfulness has attracted much attention from all walks of life. It is very important to control the spread of coconut leaf beetle to ensure the healthy and sustainable development of areca nut industry. In order to explore the control method and effect on coconut leaf beetle, the field control effect of 1% biphenyl thiamethoxam GR(root application)on betel coconut leaf beetle was measured. The results showed that 1% biphenyl thiamethoxam GR had a good control effect on the larvae and adults of coconut leaf beetle, and it also had the effect of leaf preservation. At the dose of 100-200 g per plant, the control effect of 25 days after treatment was 88.57%-97.14%, and the control effect of 50 days after treatment was 91.43%-97.14%. 1% biphenyl thiamethoxam GR is a highly efficient and low toxicity insecticide with strong internal absorption and transmission, and root application has great potential and application value to control coconut leaf beetle.