南京林业大学学报（自然科学版）2017，Vol.41Issue(3)：22-28,7.DOI:10.3969/j.issn.1000-2006.201605006
施用稻壳炭对黄棕壤氮磷淋失及微生物生物量碳氮含量的影响
Effects of rice husk biochar application on nitrogen and phosphorus leaching and microbial biomass carbon and nitrogen content in yellow brown soil
摘要
Abstract
[Objective] This study was conducted to explore whether rice husk biochar application affects nitrogen and phosphorus leaching in soil,due to its high porosity and adsorption.[Methods] A soil column leaching laboratory experiment was used to investigate the efficacy of biochar in reducing soil nutrient leaching.The application rates of rice husk biochar were 0％,1％,4％,8％ and 12％ (w/w).[Results] The leaching of total nitrogen,nitrate nitrogen and ammonium nitrogen decreased with the increase of the biochar application rate.Compared with the control,biochar application at 12％ had the best inhibitory effect by reducing the leaching of total nitrogen,nitrate nitrogen,and ammonium nitrogen by 85.41％,85.16％ and 92.61％,respectively,and reducing the leaching of DOC by 32.02％.The effect on phosphorus leaching was not significant.With the increase of the biochar application rate,the leaching of total phosphorus and phosphate increased.Soil total nitrogen,nitrate nitrogen,phosphorus,and microbial biomass carbon and microbial biomass nitrogen content increased,but ammonium nitrogen decreased.[Conclusion] The application of rice husk biochar could reduce the leaching of nitrogen and DOC,but it does not have a significant effect on phosphorus leaching.关键词
稻壳炭/黄棕壤/氮/磷/可溶性有机碳/淋失作用Key words
rice husk biochar/yellow brown soil/nitrogen/phosphorus/dissolved organic carbon(DOC)/leaching分类
农业科技引用本文复制引用
徐艺倩,薛建辉,吴永波,卜晓莉..施用稻壳炭对黄棕壤氮磷淋失及微生物生物量碳氮含量的影响[J].南京林业大学学报（自然科学版）,2017,41(3):22-28,7.基金项目
国家林业局“948”项目(2014-4-24) （2014-4-24）
国家重点研发计划(2016YFC0502605) （2016YFC0502605）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
