农业环境科学学报2012，Vol.31Issue(10)：1965-1971,7.
沼液的园林地消解处理利用及其对土壤微生物碳、氮与酶活性的影响
Short-term Effects of Biogas Slurry Application to Garden Land on Soil Microbial Biomass Carbon & Nitrogen and Soil Enzymes
摘要
Abstract
Due to the rapid development of biogas industries, large amount of biogas slurry was untreated and discharged randomly, which became a serious threat to the water safety. To study the effects of biogas slurry application to garden land on soil microbial biomass carbon (MBC ) and nitrogen( MBN ),as well as enzymatic activities, we conducted the field experiment in a vineyard base in Wanshi Town of Yixing city, Jiangsu Province and proposed a new process to treat biogas slurry safely. The digestion and utilization process of biogas slurry was compared in different treatments to evaluate the relationship between MBC, MBN and soil organic carbon, and several enzyme activities were also determined. The results indicated that MBC and MBN were not decreased during the application of biogas slurry alone, whereas significantly increased 8.70% and 17.34%, respectively in the treatment with the intercrop of ryegrass(Lotium pererve L.) and ihe installation of below-ground drainpipe. The ratio of MBC to soil organic carbon was impacted by the digestion and utilization process of biogas slurry, but did not reach a significant level. Soil sucrase activities were markedly improved in the treatment with the biogas slurry compared with CK( except the treatment with biogas slurry for irrigation alone). Urease activities were considerably improved compared with CK, whereas the acidic phos-phatase and catalase activities were not significant changed. In present experiment, the short-lerm effects of the utilization of biogas slurry in field condition were studied, and the integrated influence of the digestion and utilization of biogas slurry in garden land on crop quality, soil fertility and agricultural environment will be further investigated.关键词
污水处理/沼液/园林地/微生物碳/微生物氮/土壤酶Key words
sewage treatment/ biogas slurry/ garden land/ microbial biomass carbon/ microbial biomass nitrogen/ soil ensyme activities分类
资源环境引用本文复制引用
耿晨光,段婧婧,李汛,段增强..沼液的园林地消解处理利用及其对土壤微生物碳、氮与酶活性的影响[J].农业环境科学学报,2012,31(10):1965-1971,7.基金项目
农业部公益性行业项目(200903011) （200903011）
