相思树种子拌白僵菌粉飞机防治松毛虫试验研究

马尾松毛虫Dendrolimus punctatus walker系福建省马尾松林中最严重的历史性大害虫。1989年3月,安溪县的城厢、湖头等11个乡(镇)、场,有12.68万亩松林不同程度受害,严重影响了马尾松林的生长。相思树种子拌白僵菌粉防治松毛虫,是结合飞播进行的,每架次750kg种子伴白僵菌粉100.5kg(含孢量90亿/g,高的可达160—180亿/g),作业面积4000～4500亩,经固定标准地观察,用这种材料飞机防治松毛虫,既能取得理想效果,又能获得较好的经济效益。

Control of Dendrolimus Punctatus by Plane Propagation of Acacia Confusa Seeds Mixed with Beauveria Bassiana Powder

Dendrolimus punctatus walker, the dangerous vermine to Pinus ma-ssoniana forest in Fujian province, damaged 126.8 thousand mu of Pinus mas-soniana pure forests in 1989 in 11 towns and villages of Anqi County. the present experiment in the control of Dendrolimus punctatus was carried out by plane propagation of Acacia confusa seeds mixed with Beauveria bassiana powder in the following given conditions:100kg ( spore content of 9 billion/g) of Beauvera bassiana powder in 750 kg of cacia confusa seeds a flight in a working area of 400-4500 mu. Investigation on the fix standard area indicates the good result and economic effect by plane propagation in controlling of Dendrolimus punctatus walker.