“空中拖拉机”在复杂山区防治蜀柏毒蛾试验

摘要：本文首次在地形复杂、地势陡峭的四川省梓潼县七曲山国家级森林公园运用AT-504飞机防治蜀柏毒蛾2—3龄幼虫，作业流量2400mL·hm，喷幅80m，平均雾滴密度为15个·cm，雾滴直径140～200μm，喷洒覆盖率达90％以上。结果表明：“空中拖拉机”在复杂山区的喷洒作业质量与在平原地区相比，没有明显差异。喷洒1．2％烟碱·苦参碱乳油和3％苯氧威乳油15天内蜀柏毒蛾虫口减退率达89．5％和88．0％，飞防效果十分显著。“空中拖拉机”不仅适合平原地区农业和林业飞机喷洒作业，而且适合复杂山区林业有害生物的飞防作业，具有效果好，成本低、效率高的优点，可以大面积推广应用。

Air Tractor Control Parocneria orienta Test in the Complex Terrain

The paper is controlled 2~3 instar larvae of Parocneria orienta by Air Tractor （AT --504 ） in Qiqu Mountain National Forest Park in Zitong County in Sichuan Province, which is complezc＆ steep terrain for the first time,the flow is 2400 mL ·hm 2, spray rate is 80 m, the average droplet density is 15 per square centime- ter, the droplet diameter is 140 to 200 μm, the coverage of droplet is more than 90%. The results showed that there is no significant difference that the air tractor sprays in the complex mountainous than in the plains, 89. 5% and 88. 0% of its population can respectively reduce after 15 days when the use of 1.2% nicotine matrine EC and 3% fenoxycarb EC 15 days . So it is significant difference. Not only in the plain areas but ＂also in the complex mountainous, Air tractor can be effective used to spray on agricultural and forestry. It has the advantages of effective, low cost, high efficiency, It can be used in various terrain.