8种新型杀螨剂对玉米叶螨的田间防效评价  

Efficacy of eight acaricides in the control of maize spider mite in field

作　　者：张文年[1] 沈慧敏[1] 张新虎[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2013年第5期82-85,共4页Journal of Gansu Agricultural University

基　　金：农业部公益性行业科研专项"玉米叶螨集成防控技术研究与推广""作物叶螨综合防控技术研究与示范推广"(201103020)

摘　　要：为了筛选对玉米叶螨高效低毒的杀螨剂,进行了8种新型杀螨剂对玉米叶螨的田间药效试验.结果表明:8种药剂对玉米叶螨均有不同程度的防治效果,其中18g/L阿维菌素EC 2 000倍液、21%阿维·四螨嗪WP2 000倍液、10%哒螨灵EC 1 000倍液、240g/L螺螨酯SC 4 000倍液和5%唑螨酯SC 4 000倍液对玉米叶螨初效好,处理3d后防效分别为91.13%、88.68%、87.99%、84.09%和82.63%;20%四螨嗪SC 2 000倍液、240g/L螺虫乙酯SC 4 000倍液、5%噻螨酮WP 2 000倍液、240g/L螺螨酯SC 4 000倍液和21%阿维·四螨嗪WP 2 000倍液对叶螨残效好,处理20d后防效分别为80.91%、79.44%、79.34%、75.95%和74.68%,与对照药剂差异显著.21%阿维·四螨嗪WP 4 000倍液和240g/L螺螨酯SC 4 000倍液对玉米叶螨速效性好,持效期长,是防治玉米叶螨的首选药剂.8种新型杀螨剂对玉米生长安全,无药害发生,增产作用明显.In order to select high efficient and low toxicity acaricides for controlling maize spider mite, the field control effects of 8 acarcides on maize spider mite were tested. The results showed that all the treatments had different levels of efficiency. 18 g/L abameetin（EC）, 21% abameetin clofentenzine （WP）, 10 % pyridaben（EC）, 240 g/L spirotetramat （SC） and 5 % fenpyroximate （SC） achieved favorable quick-acting. Efficacy reached 91.13%,88. 68%,87. 99%,84. 09% and 82. 63% at 3 days,respectively. 20% clofentenzine（SC）, 240 g/L spirotetramat（SC）, 5 % hexythiazox （WP）, 240g/L dpirodiclofen （SC）, 21% abamectin clofentenzine （WP） achieved favorable 75. 95% and 74. 68% at days, respectiv persistent effects. Efficacy reached 80. 91%,79.44%,79.34%, ely. 240g/L spirodiclofen（SC） and 21% abamectin clofentenzine （WP） had obvious persist and speed insecticidal efficacy, it should be the best acaricide to control maize spider mite. The eight acarcides were safety to maize,and had significant effect and no chemical injury.

关 键 词：玉米叶螨 杀螨剂 田间防效 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]