应用生态学报2017，Vol.28Issue(5)：1550-1556,7.DOI:10.13287/j.1001-9332.201705.036
污泥堆肥对黄梁木幼苗生长和元素吸收的影响
Effects of sewage sludge compost on the growth and element uptake of Neolamarckia cadamba seedlings
摘要
Abstract
Sewage sludge compost (SSC) is rich in organic matter and nutrient elements indispensable to plant growth.Utilizing SSC as seedling growing substrate is generally recognized as a new ecological method for utilization of sewage sludge.We investigated impacts of SSC treatments including 0％ (CK),25％ (T1),50％ (T2),75％ (T3),and 100％ (T4) on the growth and nutrient uptake of Neolamarckia cadamba seedlings in a 7-month pot experiment.The changes in element contents in substrate after pot experiment were also addressed.Results showed the SSC treatments had significant impacts on the growth of N.cadamba seedlings.The seedlings in T4 treatment grew abnormally and all died in two weeks after transplanting.Seedling height,ground diameter and biomass in T1,T2 and T3 treatments were significantly higher than CK,with those in T2 being the best among all treatments.Seedlings in T2 and T3 treatments took up significantly more N,P,K,Cu,Zn,Pb and Cd,while those in T1 treatment absorbed significantly more N and Pb than CK.The heavy metal uptake amount of each treatment exhibited the order of Zn＞Cu＞Pb＞Cd.At the end of the pot experiment,the contents of organic matter,N,P and K in growing substrate were still relatively high,and a certain portion of heavy metals still remained in the substrate,but with lower contents than the standards set for agricultural usage-oriented sewage sludge,indicating that the postexperiment substrate may be reused.关键词
污泥堆肥/黄梁木/生物量/重金属Key words
sewage sludge/Neolamarckia cadamba/biomass/heavy metal引用本文复制引用
储双双,童馨,王文瑞,莫其锋,陈晓阳,曾曙才..污泥堆肥对黄梁木幼苗生长和元素吸收的影响[J].应用生态学报,2017,28(5):1550-1556,7.基金项目
本文由国家自然科学基金项目(31270675)、广东省科技计划项目(2014A020216032,2015B020207002)和国家林业局林业公益性行业科研专项(201004020)资助 This work was supported by the National Natural Science Foundation of China (31270675),the Science and Technology Department of Guangdong Province,China (2014A020216032,2015B020207002),and the Forestry Public Welfare Industry Research Project of State Forestry Administration,China (201004020). （31270675）
