摘要
[目的]采用4种不同的生测方式逐步筛选出适于根区施药的杀螨剂。[方法]以乐果为参照,采用喷雾法、浸叶法、水培法和土培法测定12种药剂对二斑叶螨的毒力。[结果]通过喷雾法筛选出活性高于乐果的9种药剂;进一步浸叶法发现溴虫腈和嘧啶氧磷的活性高于乐果;采用根部施药后,水培法和土培法均表明2种药剂对叶部螨虫具有活性。[结论]溴虫腈和嘧啶氧磷可经根部施药到达棉苗上部,且活性高于乐果,可能适用于根区施药防治棉田二斑叶螨。
[Aims ] This paper aims to screen out suitable acaricides for control of cotton mites by 4 different bioassays.[Methods ] Spraying treatment, leaf dipping treatment, water treatment and soil treatment were used to test the toxicity of 12 pesticides against Tetranychus urticae Koch, dimethoate was served as control. [Results ] Nine pesticides were screen out by spraying treatment, and further test by leaf dipping treatment showed that only chlorfenapyr and pirimioxyphos were more active than dimethoate to T. urticae. Water treatment and soil treatment indicated that chlorfenapyr and pirimioxyphos displayed better control on mites by root application. [Conclusions ] As a consequence,chlorfenapyr and pirimioxyphos were the best pesticides to control the mites with good control effect, higher than dimethoate, it is suitable for control cotton mites by root application.
出处
《农药》
CAS
CSCD
北大核心
2016年第10期774-777,共4页
Agrochemicals
基金
国家自然科学基金项目(31000868)
关键词
二斑叶螨
棉花
根区施药
药剂筛选
Tetranychus urticae Koch
cotton
root application
screening
