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敌百虫是一种高效低毒的有机磷杀虫剂,近几年巳经应用于防治蜜蜂大蜂螨(Varroa jacobsoni Oude-mans),且有良好的杀螨效果。为了进一步探讨敌百虫对大蜂螨的有效浓度范围,以便控制和利用最低有效浓度,减轻或避免防治大蜂螨时伤害蜜蜂,我们进行了敌百虫对大蜂螨的毒力测定。 供试敌百虫系上海红旗制药厂制(纯度95％),处理分6000、7000、8000、9000、10000倍5个不同浓度水溶液,并以清水作对照。供拭大蜂螨是直接从蜂子房内捕捉的成熟雌性螨。喷药时放在培养器皿内(直径
Trichlorfon is a high efficiency and low toxicity organophosphate insecticide, which has been applied to control Varroa jacobsoni Oude-mans in recent years and has a good acaricidal effect. In order to further explore the range of effective concentrations of trichlorfon on adult bee mites in order to control and utilize the minimum effective concentration and reduce or avoid the harm of bees when controlling adult bee mites, we tested the toxicity of the trichlorfon to the large-size mites and mites. Trichlorfon for the trial of the Shanghai Hongqi Pharmaceutical Factory system (purity 95%), processing points 6000,7000,8000,9000,10000 times five different concentrations of aqueous solution, and water as a control. Mating the big aphids is a mature female mite that catches directly from the bee’s room. Spray on the culture vessel (diameter