玉米三空栽培技术下玉米螟的防治

Prevention and Control of Maize Borer with the Three-space Cultivation Pattern of Maize

为了找到一种高效、低毒、低污染的杀虫剂,采用田间自然发病方法进行三空栽培技术模式下6种药剂处理对玉米螟的田间防治试验。结果表明:2%甲维盐与2%阿维·高氯氟对玉米螟的防效及产量要好于20%氯虫苯甲酰胺、3%辛硫磷、5%阿维菌素和20%乙酰甲胺磷等药剂处理。2%甲维盐的防效最好,株数防效达到82.88%,幼虫防效达到85.46%。同时具有很好的增产效果,极显著高于其它药剂处理,产量达13 269.0kg·hm^(-2),同对照相比增产率达9.2%。2%甲维盐乳油防治玉米螟效果理想,填补了三空技术在玉米大田害虫防治的空缺,建议施药浓度为750mL·hm^(-2)。

In order to find an efficient, low toxicity, low pollution pesticides, the field experiment was carried out to study the effect of 6 kinds of chemical treatments on maize borer under the three-space cultivation pattern of maize. The results showed that the control efficiency and yield of 2 % Emamectin Benzoate and 2 % Avi Gogh Fluoride were better than 20 % Chlorantraniliprole, 3 % Phoxim, 5 % Abamectin, 20 % Acephate. 2 % Emamectin Benzoate had the best control effect,which the number of plant control effect reached 82.88% and the larvae control reached 85.46%. At the same time,it had a good effect of increasing yield,which was significantly higher than that of other agents,and the yield was 13 269.0 kg·hm^-2 ,the increase rate of yield was 9.2%. 2% Emamectin Benzoate EC had the best control effect on maize borer,it filled the vacancy of three-space cultivation mode in the field of maize pest control,pesticide spraying concentration of 750 mL·hm^-2.