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敌敌畏插管烟雾剂防治森林虫害,目前已在我国广泛使用。一九七六年九月二十二日至九月二十九日,我们在昆明温泉应用敌敌畏插管烟雾剂防治思茅松毛虫(Dendrolimus Kikuchii Mat-sumura),面积500亩,检查其平均杀虫效果达87.3％。这次防治用的供热剂系安阳林业制药厂一九七四年出品的《621》烟剂,主剂敌敌畏的插管系聚乙烯塑料,内径1cm,长18cm,敌敌畏的容量为9.5ml(约12.5克)。每亩用药量:《621》烟剂1公斤;9.5ml 敌敌畏插管4只(浓度5％)。为检验防治效果,在大田防治区内,我们
Dichlorvos intubation aerosol insecticide control forest pests, has been widely used in our country. From September 22 to September 29, 1976, we administered Dendrolimus Kikuchii Mat-sumura in Kunming Hot Springs at an area of 500 mu to test its average insecticidal activity The effect of up to 87.3%. The prevention and treatment of heating agent used in Anyang Forestry Pharmaceutical Factory produced in 1974, “621” smoke, the main agent of dichlorvos intubation polyethylene plastic, diameter 1cm, length 18cm, dichlorvos capacity of 9.5ml ( About 12.5 grams). Per mu dose: “621” 1 kg of tobacco; 9.5ml dichlorvos intubation 4 (concentration 5%). In order to test the effectiveness of prevention and treatment, we are in the field of prevention and control in Daejeon