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效果独特的新杀虫剂卡斯克多昆虫生长调节剂是英国壳牌公司发明的昆虫生长调节剂。１０％乳油的卡斯克多可防治多种害虫，效果甚佳。其杀虫原理是：在昆虫幼虫蜕皮之时，妨碍外骨胳的重要组分几了质的合成，使新表皮无法形成。害虫食用了经过这种药剂处理的植物叶片或汁液...
The unique effect of the new insecticide Cask insect growth regulator is the United Kingdom Shell invented the insect growth regulator. Cascade 10% EC can prevent many pests and has a good effect. The insecticidal principle is: insects larva molt at the time, hinder the external components of the skeleton of a few basic synthesis, the new epidermis can not be formed. Pests eat plant leaves or juice that have been treated with this agent ...