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当前位置: 首页 > 文章 > 干污泥和堆肥污泥施用于红壤中N素的释放特性 水土保持通报 2014,34 (4) 313-316
Position: Home > Articles > Nitrogen Release Characteristics of Dry Sludge and Composted Sewage Sludge Applied in Red Soil Bulletin of Soil and Water Conservation 2014,34 (4) 313-316

干污泥和堆肥污泥施用于红壤中N素的释放特性

作  者：
拜得珍
单  位：
青海省环境科学研究设计院
关键词：
红壤;污泥施肥;N素释放
摘  要：
在红壤自然状况下,模拟了施肥沟,对红壤不同污泥施肥处理的N素释放特性进行了研究。试验结果表明,干污泥配比在10%~20%时,碱解氮、铵态氮和硝态氮累计释放量分别为:25.71%~33.48%,9.57%~14.85%和4.08%~7.65%。堆肥污泥配比在20%~33%时,其累计释放量分别为13.55%~15.65%,2.03%~4.23%和3.11%~5.37%。干污泥处理的释放量大于堆肥污泥处理的释放量,释放过程变化较堆肥污泥剧烈,铵态氮和硝态氮均有明显峰值,铵态氮最大含量532.98±10mg/kg,释放量最大达10.95%;硝态氮含量最大为149.2±14mg/kg,释放量最大时为3.32%。无论是从氮的肥效角度,还是氮释放的环境风险角度考虑,污泥堆肥处理后施肥方式均优于干污泥处理施肥方式。
译  名：
Nitrogen Release Characteristics of Dry Sludge and Composted Sewage Sludge Applied in Red Soil
作  者：
BAI De-zhen;Environmental Science Research and Design Institute of Qinghai Province;
关键词：
red soil;;sewage sludge;;nitrogen release
摘  要：
The nitrogen release characteristics of dry sludge and composted sewage sludge applied in red soil was studied by determining the hydrolyzable N,NH+4—N and NO-3—N of the different treated and control red soil.The results showed that the accumulative released amounts of hydrolyzable N,NH+4—N and NO-3—N were 25.71%~33.48%,9.57%~14.85%,and 4.08%~7.65%,respectively by the 10%~20%dry sludge addition.Meanwhile,the corresponding accumulative released amounts were 13.55%~15.65%,2.03%~4.23%,and 3.11%~5.37%,respectively when 20%~33% dry sludge was used.Moreover,the dry sludge treatments released greater amounts of nitrogen than composted sewage sludge treatments.In the incubation period,the variation of released N of dry sludge treatments is more than composted sludge treatments,and the peak contents and release amounts of NH+4—N and NO-3—N were 532.98±10 mg/kg(10.95%)and 149.2±14mg/kg(3.32%),respectively.Overall,the composted sewage sludge treatments are better than the dry sludge treatments considering whether the N fertilizer effects and the environment risk of N release.

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