三环锡对棉红蛛蜘的成螨、若螨和幼螨都有很好的毒效.在低剂量下,杀卵活性低,但是通过残留接触可有效地杀死新孵化的幼螨.20%三环锡稀释2000倍在果园中喷雾,可有效地防治山楂红蜘蛛、苹果红蜘蛛和柑桔红蜘蛛,而且有很好的残留效果,用药后30天,持续效果仍达90%以上. Tricyclic tin has strong toxic effects on cotton arachnids, both mites and larvae. At low doses, ovicidal activity is low, but newly hatched larvae are effectively killed by residual exposure. 20% tricyclic tin diluted 2000 times in the orchard spray, which can effectively control the hawthorn red spider, apple red spider and citrus red spider, and has a good residual effect, 30 days after treatment, the sustained effect is still up to 90% or more .