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近年来,嫩江县中央站林场,天然落叶松种子林连遭球果花蝇的严重危害,致使三个丰年未能采收到落叶松种子。为此,于1980年5月12—24日,我们在中央站林场,采用飞机喷洒敌抗磷乳剂(有效成分含量:敌百虫35%、马拉松25%、三氯甲烷40%)防治10万亩落叶松种子林中的球果花蝇,取得了明显的防治效果,球果危害率由98%下降到7.7%,平均虫口减退率达50.2%。1980年调查敌抗磷防治后的落叶松种子林,落叶松种子获得丰收,共采集落叶松球果27万斤,其中球果危害率为
In recent years, the Nengjiang Central Station Forest Farm, natural larch seedlings even condemned by the pest flies serious harm, resulting in three harvest years failed to harvest larch seeds. For this reason, on 12-24 May 1980, we used a plane sprayed with enemy anti-phospholipid emulsion (active ingredient content: 35% of trichlorfon, 25% of marathon, 40% of trichloromethane) against 100,000 Acacia larch seed forest coniferous fruit flies, and achieved significant control effect, cones damage rate from 98% to 7.7%, the average rate of 50.2% reduction of population. In 1980, the investigation of larch seed plantation after the control of anti-phosphorus, larch seeds obtained a good harvest, a total collection of 27000 kg of larch cones, of which the conch damage rate