Toxicities of cyhalothrin, dimethoate and avermectin against Tetranychus Urticae were assayed in the laboratary using agar-agar method, slide-slip method and immersion method.

• 在室内用琼脂法、浸玻片法和浸渍法分别测定了氟氯氰菊酯、乐果和齐墩螨素对棉红蜘蛛的毒力。