摘要
为明确不同类别杀虫剂对玉米穗期主要鳞翅目害虫的防控应用前景,采用人工饲料混药法测定6种杀虫剂对棉铃虫(Helicoverpa armigera)、玉米螟(Ostrinia furnacalis)、桃蛀螟(Conogethes punctiferalis)幼虫的毒力,通过田间药效试验评价其对玉米穗期害虫的防治效果。室内毒力测定结果表明,氯虫苯甲酰胺、四氯虫酰胺、甲氨基阿维菌素苯甲酸盐、虫螨腈对棉铃虫、玉米螟、桃蛀螟具有较高的室内毒力,LC50值分别在0.29~0.51、0.17~0.51、0.03~0.20、0.61~8.32 mg/L;辛硫磷毒力最低,对3种害虫毒力分别为127.76、80.57、62.11 mg/L。田间药效试验表明,6种杀虫剂对玉米穗期害虫均表现出一定的防治效果,氯虫苯甲酰胺、四氯虫酰胺、甲氨基阿维菌素苯甲酸盐、虫螨腈各处理对穗虫防治效果较高,防效在73.29%~83.52%,显著高于甲氧虫酰肼、辛硫磷各处理防效,能有效控制玉米穗期害虫危害。综合室内毒力、田间药效试验,氯虫苯甲酰、四氯虫酰胺、甲氨基阿维菌素苯甲酸盐、虫螨腈在玉米穗期害虫防控上具有较好的应用前景,可合理选择适宜药剂,轮换使用。
In order to evaluate the application prospect of different types of insecticides on maize to control main Lepidoptera during the maize tassel stage,the toxicity of six insecticides to Helicoverpa armigera,Ostrinia fur⁃nacalis and Conogethes punctiferalis were determined by Diet incorporation method,and then their control efficiency was evaluated by field tests.The results of toxicity tests showed that chlorantraniliprole,tetrachlorantraniliprole,em⁃amectin benzoate and chlorfenapyr had higher toxicity to H.armigera,O.furnacalis,C.punctiferalis,with the value of LC50 were 0.29-0.51 mg/L,0.17-0.51 mg/L,0.03-0.20 mg/L and 0.61-8.32 mg/L,respectively.The toxicity of phoxim was the lowest to H.armigera,O.furnacalis and C.punctiferalis,with the value were 121.01 mg/L,80.39 mg/L,63.48 mg/L.The field efficacy test of six insecticides showed certain control effects on maize pests in ear period.Each treatment of chlorantraniliprole,tetrachlorantraniliprole,emamectin benzoate and chlorfenapyr has a high con⁃trol effect on those pests,with the control effect were 73.29%-83.52%,significantly higher than the treatment of me⁃thoxyfenozide and phoxim,and can effectively control the damage of pests.Based on the toxicity and field efficacy tests,chlorantraniliprole,tetrachlorantraniliprole,emamectin benzoate and chlorfenapyr have good application pros⁃pects in the control of maize ear pests.In the field control,appropriate pesticides can be reasonably selected.
作者
周超
陈梅楠
吴翠霞
张勇
张田田
欧阳美
ZHOU Chao;CHEN Mei-nan;WU Cui-xia;ZHANG Yong;ZHANG Tian-tian;OUYANG Mei(Tai’an Academy of Agricultural Sciences,Tai’an 271000;Plant Protection Station of Tai’an City,Tai’an 271000;Agricultural Comprehensive Service Center of Bianyuan,Feicheng 271600,China)
出处
《玉米科学》
CAS
CSCD
北大核心
2024年第1期162-167,共6页
Journal of Maize Sciences
基金
泰安市科技发展计划项目(2018NS084)。
关键词
玉米
棉铃虫
玉米螟
桃蛀螟
杀虫剂
毒力
防治效果
Maize
Helicoverpa armigera
Ostrinia furnacalis
Conogethes punctiferalis
Insecticides
Toxicity
Control effect
