应用生态学报2018，Vol.29Issue(1)：176-184,9.DOI:10.13287/j.1001-9332.201801.030
长期秸秆黑炭施加对石灰性潮土肥力、固碳及氨挥发的影响
Effects of successive incorporation of rice straw biochar into an alkaline soil on soil fertility, carbon sequestration and ammonia volatilization
摘要
Abstract
A five-year successive rice straw-derived biochar (BC) amendment pot trial was conducted to investigate the BC effects on crop growth responses,soil properties and ammonia volatilization in a calcareous alkaline soil from 2010-2015 under the greenhouse condition.We adopted 0 (the control;BC0),2.25 t · hm-2 (BC2.25) and 22.5 t · hm-2 (BC22.5) for each wheat/millet crop season with an identical dose of NPK fertilizers.The results showed that BC treatments (BC2.25 and BC22.5) improved soil fertility and crop growth compared to the no BC control.During the five rice/millet rotations,BC22.5 treatment increased the total yields of grain and straw by 24.1％ and 74.1％,while the cumulative aboveground uptake amounts of N,P and K were significantly increased by 93.5％,71.2％ and 46.3％,respectively.After the rotations,soil available P,K,and CEC under the BC22.5 treatment were enhanced by 262％,274％ and 58.3％,compared to the control.By contrast,soil bulk density was decreased by 46.6％,while no difference was found in soil pH between the BC treatments and the control.Soil TOC and soil C/N ratio increased by 843％ and up to 25 in response to the BC22.5 treatment,respectively.The annual apparent BC loss was 3.5％-5.7％ in the BC2.25 and BC22.5 treatments.High level of BC application simulated ammonia volatilization,which increased by 102％ in BC22.5 treatment over the course of the crop rotations compared to the control.关键词
秸秆黑炭/连续施加/作物生长/碳损失/氨挥发Key words
straw-derived biochar/successive incorporation/crop growth/biochar-C loss/ammonia volatilization引用本文复制引用
赵进,赵旭,王慎强,邢光熹..长期秸秆黑炭施加对石灰性潮土肥力、固碳及氨挥发的影响[J].应用生态学报,2018,29(1):176-184,9.基金项目
本文由国家自然科学基金项目(41271312,41001147)、农业科技成果转化资金项目(2013GB24910678)和土壤与农业可持续发展国家重点实验室优秀青年人才项目(Y412010006)资助 This work was supported by the National Natural Science Foundation of China(41271312,41001147),the National Fund for Transformation of Agricultural Scientific Achievement,China (2013GB24910678) and the Young Foundation of State Key Laboratory of Soil and Sustainable Agriculture,Chinese Academy of Sciences (Y412010006). （41271312,41001147）
