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用三氯杀螨醇防治红蜘蛛,已在生产上推广多年,害螨产生了抗药性,即便浓度加大,防效仍不理想。1994年我们试用三氯杀螨醇混加碳酸氢铵喷施,却取得了较满意的杀螨效果。试验在长城赵家村果园进行,供试树是以国光品种为主的700余株结果大树,随机选取其中三株为调查树。于6月12日红蜘蛛(包括苹果红蜘蛛和山楂红蜘蛛)盛发期,按
The use of dicofol to prevent and cure spider mites, has been promoted in production for many years, has developed resistance to mites, even if the concentration increases, the control effect is still not ideal. In 1994 we tried dicofol mixed with ammonium bicarbonate spray, but achieved a more satisfactory miticidal effect. The experiment was conducted in the orchard of Zhaojiacun Village in the Great Wall. The test tree is a large tree with more than 700 trees mainly consisting of Guoguang varieties and randomly selected three of them as survey trees. On June 12, spider mites (including apple red spiders and hawthorn spider mites) on their grandchildren, press