城市绿地土壤质量对不同树种生长状况的影响  

Effect of soil quality of urban greenland on growth conditions of different trees

作　　者：黄蓉 吴永华 冯国琦 赵峰 汉梅兰 张建旗 张瑜 

机构地区：[1]兰州市园林科学研究所,甘肃兰州730070

出　　处：《甘肃农业大学学报》2017年第6期113-119,共7页Journal of Gansu Agricultural University

基　　金：兰州市科技局科技攻关项目(2015-3-40)

摘　　要：【目的】探讨城市绿地土壤质量与树木生长状况之间的关系.【方法】采用野外调查与室内试验分析相结合的方法,在兰州市主城区选择生长势不同的银杏、七叶树、法桐、栾树、五角枫、樱花、玉兰为研究对象,对其生长环境中的土壤状况进行调查研究.【结果】0~20cm和20~40cm土层中,土壤有机质含量、速效N,P,K含量、pH值和含盐量达到园林种植土质量要求的土样分别占全部土样的35.71%,10.71%,60.71%,100%,0%和7.14%,调查区域内城市绿地土壤速效K含量较高,速效P较缺乏,有机质和速效N极其缺乏,土壤盐碱度较高,土壤环境较差;在相似的气候环境中,土壤有机质、速效N,P,K含量为8.29~19.92g/kg,60.33~102.45mg/kg,11.69~42.28mg/kg,194.79~260.32mg/kg的调查树种生长较好;含量为5.54~15.02g/kg,59.02~78.10mg/kg,9.42~27.40mg/kg,161.64~246.22 mg/kg的调查树种生长较差,土壤养分含量的高低,影响树木的生长表现.【结论】可通过改良土壤和加强管理等措施为园林植物的正常生长提供条件,促进其健康生长,改善城市生态环境.【Objective】To investigate effect of soil quality of urban green land on growth conditions of trees and to find out the relationship between them.【Method】Based on field survey and experimental analysis,the tree growth potential in main urban distract of Lanzhou was investigated on Ginkgo biloba,Aesculus chinensi,Platanus orientalis,Koelreuteria paniculata,Acer mono,Prunus serrulata,Magnolia denudata.The soil condition of the seven kinds of trees was also researched.【Result】In the soil of 0~20 cm and 20~40 cm layer,the organic matter content,available N,P,K content,pH and salt content reached garden planting soil quality requirements,accounted for 35.71%,10.71%,60.71%,100%,0%and7.14% of total soil samples.In the investigation area of urban green space,the soil available K content was higher,available P was lack,organic matter and available N were extremely deficient,soil salinity-alkalinity was higher,and the soil environment was poorer.In the similar climatic environment,the investigated trees grew better in the soil of organic matter content,available N,P,K content between 8.29~19.92 g/kg,60.33~102.45 mg/kg,11.69~42.28 mg/kg,194.79~260.32 mg/kg.The trees grew worse in the soil of organic matter content,available N,P,K content between 5.54 ~ 15.02 g/kg,59.02~78.10 mg/kg,9.42~27.40 mg/kg and 161.64~246.22 mg/kg.The growth of trees depended on the level of soil nutrient content.【Conclusion】It could supply better condition to normal growth of garden plants by improving soil quality and strengthening management to promote the trees health growth and improve the urban ecological environment.

关 键 词：城市绿地 土壤质量 树种 影响 兰州市 

分 类 号：S731.2[农业科学—林学]