生态环境学报2018，Vol.27Issue(1)：40-46,7.DOI:10.16258/j.cnki.1674-5906.2018.01.006
生物炭基钼肥对土壤无机氮形态转化的影响
Effect of Biochar-based Molybdenum on Transformation of Inorganic Nitrogen in Soil
摘要
Abstract
The forms of soil inorganic nitrogen have great impact on the growth of crop plants. To investigate the dynamic transformation between soil inorganic nitrogen after application of biochar-based molybdenum fertilizers (BMFs) made from 8 types of typical agricultural wastes in Guangdong Province, pot experiments were conducted to monitor the content of ammonium N and nitric N in soil applied with ammonium N or nitric N. The results showed that all BMFs could significantly increase soil pH. To be specific, bagasse, peanut shell and rice husk BMFs treatments had pH increment for 0.5~1.0 unit, while luffa, water hyacinth, corn straw, rice straw and peanut straw BMFs treatments for 2.8~3.8 units. The effects on soil nitrification varied among treatments:bagasse, peanut shell and rice husk BMFs had little impact on nitrification, whereas other BMFs raised nitrification rates for 50%~100%. The application of BMF could also increase ammonium N fixation in soil by 10%~38%, while nitric N by 12%~30%. The results of this study can be used to guide the combining application of BMFs and nitrogen fertilizers to meet the different demands on ammonium N and nitric N between crop plants, and also lay the foundation for subsequent studies of the impact of BMFs on available molybdenum in soil, molybdenum uptake and nitrogen metabolism in crop plants.关键词
生物炭/硝态氮/铵态氮/硝化作用Key words
biochar/nitrate nitrogen/ammonium nitrogen/nitrification分类
农业科技引用本文复制引用
黄永东,杜应琼,陈永坚,管颐雯,邓腾灏博,李蕾,吴志超,柳勇..生物炭基钼肥对土壤无机氮形态转化的影响[J].生态环境学报,2018,27(1):40-46,7.基金项目
广东省自然科学基金项目(2014A030313570) （2014A030313570）
广东省科技计划项目(2014A020208067) （2014A020208067）
广东省农业面源污染防控与产地环境安全共性技术创新团队(2017LM2149) （2017LM2149）
广州市科技计划项目(201510010187) （201510010187）
