Poultry litter biochar application in combination with chemical fertilizer and Azolla green manure improves rice grain yield and nitrogen use efficiency in paddy soil
作者机构：The United Graduate School of Agricultural SciencesIwate UniversityMorioka 020-8550Japan Graduate School of Agricultural SciencesYamagata University1-23Wakaba-machiTsuruokaYamagata 997-8555Japan
出 版 物：《Biochar》 (生物炭（英文）)
年 卷 期：2021年第3卷第4期
页 面：591-602页
核心收录：
主 题：Azolla N use efficiency Poultry litter biochar Rice paddy Synergistic effects
摘 要：Poultry litter biochar is known to improve crop ***,its beneficial interactions with chemical fertilizer and/or organic manure on rice yield and nitrogen(N)use efficiency(NUE)are not well *** objective of this study was to co-apply poultry litter biochar(hereinafter biochar)and chemical fertilizer and/or Azolla as organic manure(herein N fertilizer sources)to improve the productivity of rice and *** treatments-no amendments(control),chemical fertilizer(NPK),Azolla as green manure(Azolla),and NPK+Azolla without and with biochar amendment-were evalu-ated in a pot *** rice plant growth components,yield,and NUE were *** to the treatments without biochar,co-application of biochar and N fertilizer sources significantly improved grain N uptake by 23.9%and NUE by 34.3-246.9%.These treatments also significantly improved rice growth components(5.6-18.2%)and grain yield(32.4%).Significant changes in soil properties including increases in pH,electrical conductivity(EC),total N,organic car-bon,and available phosphorus were observed following biochar *** for the soil pH and EC parameters,no significant synergistic interactions between biochar and N fertilizer sources were observed for any parameters in the present ***,compared to other treatments,the co-application of biochar and Azolla offers a feasible approach to improve rice productivity and NUE and reduce chemical fertilizer use,thereby reducing agricultural pollution and production costs.
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