Optimizing biochar addition for vermicomposting:a comprehensive evaluation of earthworms’activity,N_(2)O emissions and compost quality
作者机构：College of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China Institute of Environment and Plant ProtectionChinese Academy of Tropical Agricultural SciencesHaikou 571158China Power China Kunming Engineering Corporation LimitedKunming 650051China Institute of Plant Protection and Soil FertilizerHubei Academy of Agricultural SciencesWuhan 430064China Department of Soil ScienceBahauddin Zakariya UniversityMultan 60800Pakistan
出 版 物：《Biochar》 (生物炭（英文）)
年 卷 期：2023年第5卷第1期
页 面：59-70页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：Major Science and Technology Program of Hainan Province(ZDKJ2021009) National Natural Science Foundation of China(32171638) Yunan Science and Technology Talents and Platform Program(202205AF150004)
主 题：Earthworm Biochar addition Nitrous oxide Functional genes Burrowing activity
摘 要：Biochar addition has been widely used in the field to mitigate soil nitrous oxide(N_(2)O)emissions,and can be considered as a potential method to reduce N_(2)O emissions during ***,excessive biochar addition may inhibit earthworms’***,it is crucial to clarify the optimum addition volumes of biochar during *** study evaluated the impact of addition of various amounts of biochar(0,5,10,15,20 and 25%of total amount of feedstock)on earthworms’(Eisenia fetida)activity,N_(2)O emission and compost quality during *** with the treatment without biochar added,5%of biochar application significantly increased earthworm total biomass(from 177.5 to 202.2 g pot^(−1)),and cumulative burrowing activity(from 47.0%to 52.2%pixel per terrarium).The increased earthworms activity stimulated the vermicomposting process and led to the best quality of compost,which showed the highest total nutrient content(5.38%)and a significantly higher germination percentage of seeds(88%).Although N_(2)O emissions were slightly increased by 5%biochar addition,a nonsignificant difference was found between the treatment with 5%biochar and the treatment without biochar *** the contrary,20%and 25%biochar addition not only lowered N_(2)O emissions,but also significantly decreased the quality of *** results suggest that 5%biochar application is an appropriate amount to improve the quality of compost without significant N_(2)O emissions.
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