柑桔红蜘蛛是为害柑桔的主要害虫之一,近年来,柑桔红蜘蛛对有机磷、有机氯等农药已出现抗药性,给防治带来困难。为此,我们对广东省江门农药厂研制的一种新型杀螨剂——杀螨丹进行了田间药效试验。现将试验结果简介于后。 试验设有50％杀螨丹300倍、500倍、700倍、900倍,20％三氯杀螨醇500倍和清水对照等6个处理,每处理3次重复,各重复选5株作调查株。小区为随机排列。采用单管 Citrus spider mite is one of the major pests to kill citrus. In recent years, the citrus red spider has brought about resistance to pesticides such as organophosphorus and organochlorine, which has brought difficulties in prevention and treatment. To this end, we conducted a field efficacy trial of a new type of acaricidal agent, crocodile, developed by Jiangmen Pesticide Factory in Guangdong Province. The test results are summarized below. The experiment provided 6 treatments of 300 times, 500 times, 700 times, 900 times, 20% dicofol 500 times and clear water control, and each treatment was repeated 3 times. Five replicates were selected for investigation. Cells are randomly arranged. Single tube