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摘要: 以江苏省无锡市卢村污水处理厂厌氧消化的脱水污泥为林地施用的有机肥源，采用土培盆栽试验的方法研究了不同用量污泥施用后南林?鄄95无性系杨树Populus deltoiodes Lus P. euramericana I-45/51的生长情况及对土壤环境质量的影响。试验设计5种处理，分别为污泥施用量占土质量的0（不施污泥，对照处理），30，60，120和240 gkg-1。结果表明，黄棕壤上不同用量污泥施用后，杨树的树高、地径和生物量都有一定的增加，以30 gkg-1处理的效果最好；而潮土上30 gkg-1污泥用量的处理对杨树生长有促进作用，其余处理都表现为抑制作用。结果还表明，污泥施用后不仅明显提高了土壤中养分元素及有机质，土壤中交换态铜、交换态锌的质量分数也都有明显的提高，污泥用量与交换态金属含量之间呈显著的正相关关系。图1表4参15Abstract: To study the influence of sewage sludge on poplar （Populus deltoids Lus P. euramericana I-45/51） growth and on soil environmental quality，a greenhouse，pot experiment was conducted with anaerobically digested，dewatered sludge obtained from the Wuxi Lucun Wastewater Treatment Plant in Jiangsu Province. A two factor gradient test design with five treatments （rates of sludge application expressed as sludge to soil ratio） of 0（control），30，60，120，and 240 gkg-1 and two soil types（calcareous soil and yellow brown soil） with 3 replications was established to test height，diameter，biomass，and concentrations of heavy metals，Cu and Zn. Results showed that for calcareous soil，poplar growth was promoted with the 30 gkg-1 sludge treatment，whereas the other treatments all restrained growth；and for yellow brown soil，poplar growth of all treatments were promoted，but 30 gkg-1 sludge treatment was better than the others. In addition，soil total and available N and P as well as organic matter increased（P＜0.05）. After sewage sludge application，exchangeable Cu and Zn also increased，and there was a positive relationship（r0.05 = 0.811） between sludge ratio and exchangeable metal concentration. Thus，compared with no sewage sludge application，a 3% sludge treatment could promote growth and production of poplar［Ch，1 fig. 4 tab. 15 ref.］
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Key words:
- soil science /
- sewage sludge /
- poplar /
- soil nutrition /
- heavy non-ferrous metals
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.03.011
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