论文部分内容阅读
随着园林技术的不断发展,近几年来,各地成功移植大树的例子数不胜数。大树移植是加快城市绿化的成功尝试,具有见效快,绿化效果明显等特点。雪松是世界三大著名的园林观赏树种之一,它树姿优美,气势雄伟,因此,雪松深受人们喜爱,在我国长江及黄河流域城镇园林绿化中广泛栽培。但是,当土壤含盐量超过0.2%,PH值达到8.0以上时,雪松不易成活,异地大雪松搬家,即使当年成活,也往往生长势明显衰退,两三年后逐渐死亡。
With the continuous development of garden technology, there are numerous examples of successful transplantation of large trees in various places in recent years. Big tree transplant is a successful attempt to speed up urban greening, with quick, greening effect is obvious and so on. Cedar is one of the three famous ornamental tree species in the world. Its beautiful and graceful tree pose makes it popular with people and is widely cultivated in urban landscapes in China’s Yangtze River and Yellow River valleys. However, when soil salt content exceeds 0.2% and PH value reaches above 8.0, the cedar is not easy to survive. Even if the cedar is moved from place to place, its growth tends to decline obviously and gradually dies after two or three years.