植物营养与肥料学报2017，Vol.23Issue(5)：1258-1267,10.DOI:10.11674/zwyf.17060
追施生物炭对稻麦轮作中麦季氨挥发和氮肥利用率的影响
Effects of biochar reapplication on ammonia volatilization and nitrogen use efficiency during wheat season in a rice-wheat annual rotation system
摘要
Abstract
[Objectives]A field experiment was conducted to investigate the effect of aged and fresh biochar amendment on ammonia volatilization, nitrogen use efficiencies and wheat yield during wheat season in a rice-wheat rotation system.[Methods]Six treatments were carried out in this experiment, including two control treatments N0B0 (no nitrogen + no biochar), N1B0 (N 250 kg/hm2 nitrogen); two aged biochar amendment treatments N1B1 (N 250 kg/hm2 nitrogen + 20 t/hm2 biochar), N1B2 (N 250 kg /hm2 nitrogen + 40 t/hm2 biochar);two aged with fresh biochar amendment treatments N1B1 + B (N1B1 add 10 t/hm2 biochar), N1B2 + B1 (N1B2 add 20 t/hm2 biochar).[Results]Results showed that the N1B1 and N1B1 + B treatments significantly decreased the cumulative NH3 volatilization by 36.6% and 6.4%, increased the nitrogen use efficiency by 30.1%and 14.1% and increased the wheat yield by 55.6%, 26.9% compare with N1B0. In contrast, compared with N1B0 treatment, N1B2,N1B2 + B1 treatments significantly increased the cumulative NH3 volatilization by 20.3% and 40.5%, the nitrogen use efficiency increase by 35.9% and 14.3% and the wheat yield significantly increased by 72.5%, 18.9%, respectively. Moreover, compared with the aged biochar amendment, biochar topdressing significantly increased the NH3 volatilization, and decreased the nitrogen use efficiency and wheat yield.[Conclusions]Biochar amendment could significantly increase the nitrogen use efficiency and wheat yield during wheat season in paddy field. Aged biochar at the rate of 20 t/hm2 can decrease the ammonia volatilization loss while increase the nitrogen use efficiency and wheat yield.关键词
生物炭/追施生物炭/氨挥发/氮肥利用率/产量Key words
biochar/biochar reapplication/ammonia volatilization/nitrogen utilization/yield引用本文复制引用
董玉兵,吴震,李博,许欣,熊正琴..追施生物炭对稻麦轮作中麦季氨挥发和氮肥利用率的影响[J].植物营养与肥料学报,2017,23(5):1258-1267,10.基金项目
公益性行业(农业)科研专项(201503106) （农业）
国家自然科学基金项目(41471192) （41471192）
国家科技支撑计划项目(2013BAD11B01)资助. （2013BAD11B01）
