R44Raven-Ⅱ型直升飞机防治核桃黑斑蚜试验初报

Experimental Report on the Control of Chromaphis Juglandicola Kaltenbach by R44Raven-Ⅱ Type of Helicopter

使用罗宾逊R44Raven-Ⅱ型直升飞机静电喷雾1%苦参碱乳油进行了防治核桃黑斑蚜试验,经测定飞行参数的有效喷幅为40m,每架次理论作业面积为53.33hm2,每架次有效作业时间测定401s即6.7min。结果表明:虫口减退率最高为93.25%,防治最终效果为85.87%,达到相关技术要求。通过效益评价,飞机防治核桃黑斑蚜防效好,效率高,比人工防治节约成本270元/hm2,适于在有条件的区域应用。

The experiment uses the R44Raven-Ⅱ type of helicopter to conduct the electrostatic spraying of 1 matrine missible oil for the control of Chromaphis juglandicola Kaltenbach. Through the testing, the article finds out that the effective spraying width is 40m and each helicopter＇s one-time working area is 53.33 hm2 ;the working area per second is 0.133 hm2 ;effective working time of helicopter is 401 seconds,namely 6. 7 minutes. The results indicate that using the 1% matrine missible oil to control,the average dropping rate of Chromaphis juglandicola Kaltenbach is 93.25 % （5 days after the control）. The final effect （10 days after the control） reaches 85.87% ,which meets the relevant technical requirements. Through the profit evaluation,the controlling effect of Chromaphis juglandicola Kaltenbach by the R44Raven-Ⅱ type of helicopter is good and efficient,which saves 270 RMB/hm2 compared with manual control cost and is suitable for the application in the qualified area.