绿化苗木在引进、生产和管理中最常见的是植株的叶片不正常发黄、焦枯、落叶,甚至死亡。水分与空气湿度水分过大雨涝、浇水过多、过勤或低洼地带等,常造成土壤长期处于水分饱和状态,造成土壤缺氧,阻碍根系的正常呼吸,引起根系对水分养分吸收能力受阻。受害后叶片开始发黄,继而开始脱落,积水严重时根系腐烂。为防止“淹死”发生,应立即停止浇水并进行排水、松土。 Greening seedlings in the introduction, production and management of the most common is the plant leaves are not normal yellow, scorch, deciduous, and even death. Moisture and air humidity Waterlogging is excessive Rainfall, excessive watering, overdrive or low-lying areas, often resulting in long-term soil moisture saturation, resulting in soil hypoxia, impede the normal respiration of the root system, causing the root absorption of moisture and nutrients blocked. The leaves began to yellow after the victim, and then began to fall off, severe water corrosion decay. To prevent “drowning” from occurring, immediately stop the watering and drainage, loose soil.