美国白蛾的发生与防治美国白蛾是世界上植物检疫虫害之一。目前在辽南地区正以每年３０公里的速度向北蔓延。１９８９年在大连市郊公路两侧的行道树上和山林树上发现美国白蛾，现已遍布该地的果园。该虫属杂食性，幼虫孵化后即开始结网群栖蚕食叶片，１－４龄期为结网危害... The Occurrence and Control of American White Moth The American white moth is one of the world’s plant quarantine pests. At present, the area in southern Liaoning is spreading northward at a rate of 30 kilometers per year. In 1989, the American white moths were found on the road trees and tree forests on both sides of the outskirts of Dalian, and are now found in the orchards of the area. The insects are omnivorous, larvae begin to hatch after hatching group habitat silkworm leaves, 1-4 age network damage ...