三氯杀螨醇加碳酸氢铵可提高杀螨效果三氯杀螨醇防治红蜘蛛，由于多年使用，害螨产生抗药性，虽浓度加大，防效仍不理想。１９９４年我们试用三氯杀螨醇混加碳酸氢铵，却取得了较满意的杀螨效果。试验在长城赵家村果园进行，供试树为以国光品种为主的７００余株结果大树，... Dicofol plus ammonium bicarbonate can increase the effectiveness of miticide to kill diclofenac. As a result of years of use, pest mites produce resistance, although the concentration increases, the control effect is still not satisfactory. In 1994, we tried dicofol mixed with ammonium bicarbonate, but we achieved a satisfactory miticide-killing effect. Test in the Great Wall Zhao Village Orchard, for the test tree to Guoguang varieties of more than 700 trees, ...