Effects of winter cover crops from different functional groups on soil-plant nitrogen dynamics and silage maize yield

农学 覆盖作物 青贮饲料 干物质 生物量(生态学) 氮气 生长季节 浸出(土壤学) 生物 环境科学 土壤水分 化学 生态学 有机化学
作者
Insa Kühling,Paul Mikuszies,Mirjam Helfrich,Heinz Flessa,Michaela Schlathölter,Klaus Sieling,Henning Kage
出处
期刊:European Journal of Agronomy [Elsevier BV]
卷期号:148: 126878-126878 被引量:9
标识
DOI:10.1016/j.eja.2023.126878
摘要

Cover crops (CCs) are known for their multiple benefits in agro-ecosystems. This is especially true in intensive cropping systems with high nitrogen (N) inputs and considerable post-harvest residual N. Furthermore, research has shown that CCs have the potential to reduce nitrate N leaching losses. The efficacy of ecosystem services by implementing CCs is related to site-specific management optimisation as well as species individual traits. In this study, four winter CCs from different functional groups (oil radish, saia oat, spring vetch, winter rye) were compared to a bare fallow which served as control. Furthermore, the CCs were evaluated in terms of the effects on N immobilisation, mineralisation dynamics, N uptake and biomass accumulation of silage maize used as a subsequent cash crop. Field trials were conducted at two locations, during two consecutive establishment years, with silage maize fertilised with two different N levels (no/sufficient fertiliser). Successful CC growth accumulated between 0.89 (volunteer oilseed rape (OSR)/vetch mixture) and 3.50 Mg dry matter ha−1 (rye). The CCs accumulated between 39 (rye) and 79 kg N ha−1 (radish) in aboveground biomass and significantly reduced soil mineral nitrogen (SMN) by 12 kg N ha−1 during the winter growth period. In the subsequent maize growing season all CCs increased SMN by 45 kg N ha−1 on average compared to the fallow. The C/N ratios in the aboveground biomass of CCs varied between 10.5 and 27.0 in the order: OSR/vetch < radish < rye < oat. Nitrogen uptake of the subsequent silage maize was significantly increased by 53 and 54 kg N ha−1 compared to the fallow without and with added N, respectively. Net N mineralisation indicated periods with net SMN immobilisation under sufficient N fertilisation and was more pronounced after CCs than fallow. Effective N mineralisation during maize growth was significantly higher following CCs without N fertilisation (51 kg N ha−1); however, the increase was lower with added N (43 kg N ha−1). Cover crops increased apparent fertiliser N immobilisation rates during the maize cropping period by 28 % (maize following bare fallow) to 34 % (OSR/vetch > radish, no effect for rye). Maize dry matter yield (15.58/17.33 Mg ha−1 without/with N) did not significantly differ between CCs and bare fallow treatments. Overall, there was a trade-off between N buffering during winter (CC biomass as main driver for N uptake), N supply and utilisation of the subsequent cash crop (C/N ratio of CC residues as main driver for mineralisation) where radish indicated the greatest net benefits for silage maize cropping systems without yield effects.
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
量子星尘发布了新的文献求助10
1秒前
9℃发布了新的文献求助10
1秒前
科研通AI2S应助lm采纳,获得10
2秒前
山谷发布了新的文献求助10
3秒前
感动黄豆发布了新的文献求助10
5秒前
7秒前
8秒前
8秒前
8秒前
10秒前
Owen应助晒太阳的加菲猫采纳,获得10
11秒前
anna发布了新的文献求助10
13秒前
13秒前
wu基督教发布了新的文献求助10
14秒前
15秒前
余南发布了新的文献求助10
16秒前
晒太阳的加菲猫完成签到,获得积分10
16秒前
笑点低诗桃完成签到,获得积分20
17秒前
泡泡脑瓜完成签到,获得积分10
17秒前
19秒前
liche发布了新的文献求助10
19秒前
20秒前
修管子发布了新的文献求助10
20秒前
21秒前
共享精神应助gx采纳,获得10
21秒前
高手完成签到,获得积分20
22秒前
无所谓的啦完成签到,获得积分10
22秒前
ylq关闭了ylq文献求助
23秒前
wu基督教完成签到,获得积分20
23秒前
24秒前
迷人的芹菜完成签到,获得积分10
24秒前
25秒前
Miracle发布了新的文献求助10
25秒前
高手发布了新的文献求助10
26秒前
26秒前
我啊完成签到 ,获得积分10
29秒前
slp发布了新的文献求助30
30秒前
30秒前
gx发布了新的文献求助10
32秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989115
求助须知:如何正确求助?哪些是违规求助? 3531367
关于积分的说明 11253688
捐赠科研通 3269986
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882078
科研通“疑难数据库(出版商)”最低求助积分说明 809105