一、主要症状及为害情况树脂病为我省柑桔上的重要病害之一,主要为害柑桔的枝干、叶片及果实。枝干被害后,大致表现为流胶和干枯两种类型。甜橙、温州蜜柑等品种,感病后发生流胶现象较普遍。病部皮层组织松软,呈灰褐色,溢出褐色胶粒或胶溢并有恶臭。在高温干燥情况下,病势发展缓慢,病部逐渐枯陷。最后病势停止发展,病斑四周产生愈合组织,死皮开裂脱落,木质部暴露,现出四周隆起的疤痕。宽皮桔类如南桔、朱红桔等品种,病部无显 First, the main symptoms and damage Resin disease is one of the important diseases on our province citrus, the main damage citrus branches, leaves and fruits. After the branches were killed, the general performance of the two types of plastic flow and dry. Sweet orange, mandarin and other varieties of Wenzhou, the prevalence of plastic flow after the phenomenon is more common. Sick cortical tissue is soft, grayish brown, overflowing brown gum or gum overflow and stench. In the case of high temperature drying, the disease develops slowly, the disease gradually subsided. The last condition to stop the development of lesions around the healing tissue, dead skin cracked off, xylem exposed, surrounded by raised scars. Wide-skinned oranges such as South orange, Zhu Hong tan and other varieties, no obvious disease