Straw management in paddy fields can reduce greenhouse gas emissions: A global meta-analysis

稻草 温室气体 环境科学 农学 农业 水田 粮食安全 全球变暖 农业工程 气候变化 生态学 工程类 生物
作者
Zijian He,Hongxia Cao,Qi Chen,Qingyang Hu,Jiaping Liang,Zhijun Li
出处
期刊:Field Crops Research [Elsevier BV]
卷期号:306: 109218-109218 被引量:29
标识
DOI:10.1016/j.fcr.2023.109218
摘要

Straw return is gaining popularity as a viable agricultural practice for improving soil fertility, crop yield, and produce quality However, the inconsistent assessment of greenhouse gas (GHG) emissions from straw return in paddy fields poses a threat to both the environment and food security Therefore, a meta-analysis of 858 comparisons from 93 studies was conducted to determine the GHG emissions performance from straw return in paddy fields, identify key factors and propose the optimal straw management practices to achieve global warming potential (GWP) reductions The results indicated that straw return lowered N2O emissions (Hedges' d = −0.18, 95% CI: −0.30 to −0.06), but the benefits were fully counteracted by significant increase in CO2 (Hedges' d = 2.18, 95% CI: 1.38–2.97) and CH4 (Hedges' d = 2.82, 95% CI: 2.56–3.08) emissions, and resulting in higher GWP (Hedges' d = 2.75, 95% CI: 2.26–3.26). GHG emissions from straw return in paddy fields affected by climate and soil conditions as well as agricultural management practices, with mean annual temperature (MAT), mean annual precipitation (MAP), pH and straw size as key factors for CH4, N2O, CO2 and GWP, respectively. Additionally, GWP also influenced by MAT, MAP, soil C/N, available N, soil total N, pH, straw return method and cropping practice. Optimal GWP reduction performance was obtained when 5–10 cm straw was returned to the paddy field in region with MAP < 1338 mm. However, as climate conditions remain challenging to alter, we propose the following straw management recommendations for paddy fields: straw return amount greater than 7500 kg·ha-1, with straw size ≥ 5 cm, and straw incorporation Optimizing straw management in paddy fields can improve straw acceptance in paddy fields as well as mitigating the greenhouse effect This study holds implications for informing the widespread adoption of straw return practices in paddy fields by providing a scientifically grounded foundation for decision-making.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
bkagyin应助鱼咬羊采纳,获得10
1秒前
Leeny发布了新的文献求助10
2秒前
3秒前
3秒前
飞行中的鱼完成签到,获得积分20
4秒前
牛牛眉目发布了新的文献求助10
5秒前
菲晗子完成签到,获得积分20
5秒前
茜茜哎科研应助湛湛采纳,获得10
5秒前
zx发布了新的文献求助10
7秒前
8秒前
9秒前
土豪的雪巧完成签到,获得积分10
10秒前
雨的前世完成签到,获得积分10
13秒前
13秒前
Sun发布了新的文献求助10
14秒前
gulllluuuukk完成签到,获得积分10
14秒前
可可西里完成签到,获得积分10
14秒前
15秒前
茜茜哎科研应助傅勃霖采纳,获得10
15秒前
15秒前
Lee发布了新的文献求助10
16秒前
17秒前
17秒前
牛牛眉目发布了新的文献求助10
18秒前
yang发布了新的文献求助10
20秒前
蛋挞完成签到 ,获得积分10
21秒前
李爱国应助zx采纳,获得10
21秒前
bunny完成签到,获得积分20
22秒前
新威宝贝完成签到,获得积分10
24秒前
24秒前
xr完成签到 ,获得积分10
24秒前
张雷应助yangyl采纳,获得10
25秒前
AXEDW完成签到 ,获得积分10
27秒前
csy完成签到,获得积分10
30秒前
顾矜应助黄启烽采纳,获得10
32秒前
ll完成签到 ,获得积分10
32秒前
材袅完成签到,获得积分10
32秒前
33秒前
帆船发布了新的文献求助10
33秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3966366
求助须知:如何正确求助?哪些是违规求助? 3511778
关于积分的说明 11159852
捐赠科研通 3246372
什么是DOI,文献DOI怎么找? 1793416
邀请新用户注册赠送积分活动 874427
科研通“疑难数据库(出版商)”最低求助积分说明 804388