Effects of Biochar and Humus on CH

CHEN Feng; LIU Juan; ZHENG Meiqun; JIANG Peikun; WU Jiasen; LI Yongfu; LI Songhao

doi:10.13870/j.cnki.stbcxb.2022.01.047

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Effects of Biochar and Humus on CH

更新时间：2025-03-12

- Effects of Biochar and Humus on CH
- Vol. 36, Issue 1, Pages: 368-374(2022)
- 作者机构：
  
  1. 浙江农林大学亚热带森林培育国家重点实验室, 浙江临安,311300
  2. 浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室, 浙江临安,311300
  3. 杭州市临安区农林技术推广中心, 浙江临安,311300
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.01.047
  CLC： S511.3
- Published：2022
- 稿件说明：
移动端阅览
CHEN Feng, LIU Juan, ZHENG Meiqun, et al. Effects of Biochar and Humus on CH[J]. 2022, 36(1): 368-374.
DOI：

CHEN Feng, LIU Juan, ZHENG Meiqun, et al. Effects of Biochar and Humus on CH[J]. 2022, 36(1): 368-374. DOI： 10.13870/j.cnki.stbcxb.2022.01.047.

摘要

为探讨生物质炭与腐殖质单独施用与配合施用对稻田土壤CH4和N2O气体排放以及水稻产量的影响。以浙江临安潜育性水稻土的稻田系统为研究对象

设置2个水稻秸秆生物质炭添加水平(0

20 t/hm2)和3个腐殖质水平(0

0.6

1.2 t/hm2)

共6个处理

分别为: (1)B0F0(对照

不添加生物质炭和腐殖质); (2)B0F1(腐殖质用量为0.6 t/hm2); (3)B0F2(腐殖质用量为1.2 t/hm2); (4)B1F0(生物质炭用量为20 t/hm2); (5)B1F1(生物质炭和腐殖质用量分别为20

0.6 t/hm2); (6)B1F2(生物质炭和腐殖质用量分别为20

1.2 t/hm2)

研究生物质炭和腐殖质输入对水稻产量、稻田CH4和N2O气体排放的影响。结果表明: (1)与B0F0相比

单独施用生物质炭和腐殖质或生物质炭与腐殖质配施均降低了土壤CH4累积排放量

但增加了土壤N2O累积排放量; (2)生物质炭处理对GWP(global warming potential)和GHGI(greenhouse gas intensity)没有显著影响(P＞0.05)

腐殖质处理显著降低了GWP和GHGI(P＜0.05)

生物质炭和腐殖质对GWP和GHGI存在显著交互作用(P＜0.05);(3)与B0F0相比

单独施用生物质炭和腐殖质或者生物质炭与腐殖质配施均能在一定程度上减少单位水稻产量的温室气体排放强度(GHGI)

B0F2处理的GHGI最低

表明单施腐殖质处理(腐殖质用量为1.2 t/hm2)稻田土壤的减排效果和环境效应最好。研究结果为进一步探讨稻田土壤固碳减排提供数据支撑和理论依据。

Abstract

To evaluate the effects of single and combined application of biochar and humus on CH4 and N2O emission in paddy field and rice yield

taking the paddy field system of gleyic paddy soil in Lin'an

Zhejiang Province as the research object

two addition levels of rice straw biochar (0 and 20 t/hm2) and three addition levels of humus (0

0.6 and 1.2 t/hm2) were set in the experiment

and a total of six treatments were carried out

which were B0F0 (control

without biochar or humus)

B0F1 (humus dosage of 0.6 t/hm2)

B0F2 (humus dosage of 1.2 t/hm2)

B1F0 (biochar dosage of 20 t/hm2)

B1F1 (the amounts of biochar and humus were 20 t/hm2 and 0.6 t/hm2

respectively)

B1F2 (the amounts of biochar and humus were 20 t/hm2 and 1.2 t/hm2

respectively). Effects of biochar and humus addition on rice yield

CH4 and N2O emissions in rice fields were studied. The results showed that: (1) Compared with B0F0

application of biochar and humus alone or combination all reduced cumulative CH4 emission and increased cumulative emission of N2O in soil. (2) Biochar treatment had no significant effect on GWP (global warming potential) and GHGI (greenhouse gas intensity) (P>0.05). Humus treatment significantly decreased GWP and GHGI (P < 0.05). Biochar and humus had significant interaction on GWP and GHGI (P < 0.05). (3) Compared with B0F0

the application of biochar and humus alone or the combined application could reduce greenhouse gas emission intensity (GHGI) per unit rice yield to a certain extent. The GHGI of B0F2 treatment was the lowest

indicating that the application of humus alone (the amount of humus was 1.2 t/hm2) had the best emission reduction effect and environmental effect. The results could provide data support and theoretical basis for further discussion on carbon sequestration and emission reduction in paddy soil.

关键词

Keywords

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