松突圆蚧的化学防治  

THE CHEMICAL CONTROL OF THE PINE ARMOURED SCALE HEMIBERLESIA PITYSOPHILA TAKAGI

作　　者：赵善欢[1] 刘秀琼[1] 黄彰欣[1] 陈文奎[1] 魏喜葵 温佛仪 

机构地区：[1]华南农业大学昆虫毒理研究室,广州510642 [2]广州民航管理局专业航空处,广州510401

出　　处：《昆虫学报》1993年第2期177-184,共8页Acta Entomologica Sinica

摘　　要：经过应用20多种化学农药及其与植物油、矿物油的混合制剂进行室内药效筛选、林间地面喷雾试验和两年的飞机防治试验,我们研制出能有效地防治松突圆蚧(Hemiberlesia pitysophila Takagi)的药剂配方——植物油与矿物油的混合油剂。这种混合油剂在小区试验中用5％浓度,防治效果可达98.5％;用20％浓度进行飞机喷雾,药量折合5千克/亩,防治效果也达70％以上。这种混合油剂对松突圆蚧的重要天敌红点唇瓢虫(Chilocorus Kuwanae)成虫和丽蚜小蜂(Encasia sp. )安全,对环境一般无不良影响,同时乳化效果好,配制方便,值得开发应用。Studies on chemical control of the pine armoured scale seriously infests pine trees were conducted during 1988 and 1989 in Guangdong Province. Through a series of screening tests for effectiveness of 16 synthetic insecticides in the laboratory, field trials and experiments by aerial spray applications of promising materials (including various formulations of oil emul-sions) in the forest, we succeeded in establishing the outstandingly high effectiveness of an oil emulsion, a product which we formulated by mixing the rubber tree seed oil (or chinaberry seed oil) with the diesel oil at a ratio of 3:7 with an emulsifier in an appropriate amount. Results of field trials by ground spray application of the test materials showed that at con-centration of 5%, the product gave a high control of the scale insect up to 90-100%. In two experiments using aerial spray application of the materials it was shown that this mixture when diluted with water at 1:4 equivalent to 75 kg/ha gave a control efficiency above 70%, which means much more potent than the conventional pine resin-diesel oil mixture commonly used in Hui-Ding County, Guangdong Province and other places. Meanwhile, this produc was found to be safe 10 Encarsia sp. and Aphytis sp., hymenopterous parasites as the most important natural enemies of the pine armoured scale and proved to have no harmful effect on the environment. Furthermore, the formulation can be easily prepared as an emulsion. It is suggested that the product could be widely used for the effective control of the pine armoured scale and other insects infesting the pine trees.

关 键 词：松突圆蚧 植物油 矿物油 药剂防治 

分 类 号：S763.35[农业科学—森林保护学]