最新录用：生物炭和双氰胺对设施蔬菜土壤温室气体排放的影响

doi:10.3864/j.issn.0578-1752.220318

摘要/Abstract

摘要： 【目的】通过探究生物炭、双氰胺（DCD）及二者联合施用对设施土壤温室气体（N₂O、CO₂和CH₄）排放的综合效应，为设施蔬菜生产体系的温室气体减排和绿色发展提供科学依据。【方法】以设施菜田体系为研究对象，设置不施氮（CK）、传统施氮（CN）、推荐施氮（RN）、推荐施氮+生物炭（RNB）、推荐施氮+DCD（RND）和推荐施氮+生物炭+DCD（RNBD）6个处理。采用盆栽试验法分析不同处理下土壤温室气体的排放特征，以及排放强度（GHGI）和全球增温潜势（GWP）的差异。【结果】与CN相比，推荐施氮条件下各处理（RN、RNB、RND和RNBD）的油菜产量降低2.9%—29.3%，但等氮条件下，推荐施氮+生物炭+DCD联合施用处理（RNBD）则使油菜产量增加了34.4%，生物炭和DCD在油菜增产方面表现出协同效果（P<0.05）。推荐施氮条件下的各处理较CN降低了29.4%—76.5%的土壤N₂O排放量，以RND效果最优，但对土壤CO₂、CH₄排放影响不大；与CN相比，推荐施氮条件下的各处理总GWP有所降低，降低幅度为4.3%—51.2%，以RND减排效果最优；就GHGI而言，各推荐施氮处理间差异则不显著（P>0.05），但同样以RND减排效果最优。【结论】等氮条件下，施用生物炭或双氰胺对油菜产量影响不大，二者联合施用可显著促进油菜增产，并可在一定程度上降低温室气体累积排放与全球增温潜势，但二者联合施用的效果并不优于单独与双氰胺配施。

关键词: 生物炭, 双氰胺, 设施菜田, 温室气体排放强度, 综合增温效应

Abstract: 【Objective】This paper aimed to explore the comprehensive effects of biochar, dicyandiamide (DCD) and their combined application on the greenhouse gas (N₂O, CO₂ and CH₄) emissions from facility soil, and to provide scientific basis for reducing the greenhouse gas emissions and green development of facility vegetable production system. 【Method】 In this study, the facility vegetable production system was used as the research object, and a total of six treatments were set up, including no nitrogen application (CK), traditional nitrogen application (CN), recommended nitrogen application (RN), recommended nitrogen application + biochar (RNB), recommended nitrogen application + DCD (RND), recommended nitrogen application + biochar + DCD (RNBD). A pot experiment method was applied to analyze the effects of soil greenhouse gas emissions, and the difference in greenhouse gas intensity (GHGI) and global warming potential (GWP) under different treatments. 【Result】Compared with the CN treatment, the rape yield decreased by 2.9%-29.3% under the recommend nitrogen treatments (RN, RN, RND and RNBD). However, under the same nitrogen application rate, the rape yield increased by 34.4% in the treatment of recommend nitrogen combined with biochar and DCD (RNBD), indicating that biochar and DCD showed a synergistic effect on rape yield increase (P<0.05). The recommend nitrogen treatments reduced the soil N₂O emissions by 29.4%-76.5% in comparation with the CN treatment, especially the RND treatment showed the best effect. However, the recommend nitrogen treatments showed little effect on soil CO₂and CH₄ emissions. Compared with the CN treatment, the total GWP under the recommended nitrogen treatments decreased by 4.3%-51.2%, and the RND treatment showed the best emission-reduction effect. In terms of GHGI, the difference among the recommended nitrogen treatments was not significant (P>0.05), and the RND treatment also showed the best emission-reduction effect. 【Conclusion】Under the same nitrogen application rate, the application of biochar alone or DCD alone had little effect on crop yield, but the combination of biochar and DCD could significantly increase the rape yield. Additionally, the combination of biochar and DCD could reduce the cumulative greenhouse gas emissions and GWP, but it was not superior to single application of DCD in the facility vegetable field.

Key words: biochar, DCD, facility vegetable field, greenhouse gas emissions intensity, global warming potential

宋博影, 郭艳杰, , 王文赞, 吕泽楠, 赵宇晴, 柳鹭, 张丽娟, . 最新录用：生物炭和双氰胺对设施蔬菜土壤温室气体排放的影响[J]. 中国农业科学, 0, (): 1-.

SONG BoYing, GUO YanJie , , , WANG WenZan, LV ZeNan , ZHAO YuQing, LIU Lu, ZHANG LiJuan, . Effects of Biochar Combined with Dicyandiamide on Greenhouse Gases Emissions from Facility Vegetable Soil[J]. Scientia Agricultura Sinica, 0, (): 1-.

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最新录用：生物炭和双氰胺对设施蔬菜土壤温室气体排放的影响

Effects of Biochar Combined with Dicyandiamide on Greenhouse Gases Emissions from Facility Vegetable Soil

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