论文部分内容阅读
近几年,随着城镇化的加快,小区绿化从原来单纯追求绿化美化的园林发展到追求健康的园林为目标。合欢作为观赏树及行道树的首选,确保其健康生长也变得尤为重要。通过近几年的观察,合欢流胶病在菏泽地区发生较为普遍。严重时树干开裂,早期落叶,甚至整株死亡,造成严重的经济损失。发生规律及危害症状每年5~6月,是流胶病第一次发生高峰期。开花前合欢木虱危害严重,树叶脱落,树干出现水渍斑,然后流胶,
In recent years, along with the acceleration of urbanization, the greening of residential communities has evolved from the pursuit of green landscaping to the pursuit of healthy gardens. Acacia as the first choice for ornamental trees and street trees, to ensure its healthy growth has become even more important. Through the observation in recent years, Acacia meningitis occurs more commonly in Heze area. Severe trunk cracking, early deciduous, or even whole plant died, causing serious economic losses. Occurrence of law and harm symptoms 5 to 6 months a year, is the first occurrence of melo-gel peak. Acacia pre-flowering psyllium harm, leaves fall off, water stains appear trunk, and then plastic flow,