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西丰县农管站1974年在11个公社的11个大队进行了赤眼蜂防治大豆食心虫试验。放蜂面积200亩。蜂种为松毛虫赤眼蜂。亩放蜂量为4万头,于8月15日、8月18日、8月21日3次施放。第一次和第三次各放1万头,第二次放2万头。上风头多放,占总蜂量的2/3,每亩6个放蜂点;下风头少放,占总蜂量的1/3,每亩3个点。每个大队设有5亩以上不放蜂、不施药的对照田。
Xifeng County Agricultural Management Station In 1974, 11 brigades of 11 communes conducted the Trichogramma control experiment on soybean borer. Put the area of 200 acres of bees. Bee species Trichinella Trichogramma. Mu amount of bee was 40,000, on August 15, August 18, August 21, 3 cast. The first and third put 10,000 each, the second put 20,000. More on the upper hand, accounting for 2/3 of the total amount of bee, put six bee points per acre; under the limelight, accounting for 1/3 of the total bee, 3 points per acre. Each brigade has more than 5 acres of bee without the application of pesticide control field.