论文部分内容阅读
新世纪的城市是生态健全、环境优美、人与自然和谐共存的城市。城市园林绿化是衡量城市现代化文明程度的重要标志,其重要构件之一的城市植被近年来常见患黄化病的报道:夏季树叶发黄脱落,草坪黄化等夏现秋景现象。
The new century city is a city with sound ecology, beautiful environment and harmonious co-existence between man and nature. Urban landscaping is an important symbol to measure the degree of civilization of modern cities. One of the important components of urban vegetation is the common reports of yellowing diseases in recent years: the yellow leaves fall off in summer and the yellowish autumn phenomenon such as yellowing of lawns.