兰州市黄河风情线行道树柳树穴土壤有机质及盐碱特征

摘要

采集黄河风情线沿岸行道树柳树穴土壤,研究其有机质、全盐、pH 等理化性质,以摸清园林绿地土壤的基本性状。结果表明,土壤有机质在表层土壤含量较高,深层土壤有机质含量相对较低；北滨河路中山桥-龙源段有机质平均含量最高,银滩桥-南滨河路秀川桥段有机质平均含量最低；土壤全盐含量绝大多数处于较低的水平,对种植植物不会产生盐害作用,60~80 cm 土层有全盐含量较高的现象,即为盐渍化土壤；土壤 pH 全部是碱性和强碱性土壤。%The study collected the soil samples under the roadside willow along the riverside of the Yellow River to test the total salt,pH,organic matter and other physical and chemical properties for finding out the bas-ic characters of the garden greenbelt soil.The results showed that,(1)the content of organic in surface soils and deep soils were high and low,respectively;(2)the highest organic matter in the soil from Zhongshan Bridge to Longyuan section,and the lowest organic matter in the soil from Silver Bridge to Xiuchuan;(3)the salt content in the soil was low,which can not damage plants growing.However,the soil in 60~80 cm had higher total salt content;(4)the pH of the all soil was alkaline and strongly alkaline.Based on the results of the soil conditions, the study provide a scientific basis for garden plants cultivation,rational configuration and promoting the devel-opment of the urban greening.