柑桔树脂病主要为害枝条、树干和叶片，导致枝条枯死，树势减弱，严重时可使整株死亡。树干和大技受害时，病部皮层坏死，并侵入木质部。病部呈灰褐色，病部和健部交界处有一条黄褐色或黑褐色菌带。有时可产生流胶并有酒糟气味。病部皮下有黑色小粒点。果实和叶片受害时，表面 Citrus resin disease is mainly damaged branches, trunks and leaves, leading to dead branches, shrubs weaken, the whole plant may die in serious cases. Trunk and skills damage, the diseased cortex necrosis, and invasive xylem. Patient was gray-brown, diseased and Ministry of Health at the junction of a brown or dark brown belt. Sometimes can produce plastic flow and smell of lees. Diseased skin subcutaneous black small particles. Fruit and leaf damage when the surface