








中国农业科技导报 ›› 2025, Vol. 27 ›› Issue (11): 186-194.DOI: 10.13304/j.nykjdb.2024.0715
• 生物制造 资源生态 • 上一篇
易丽霞1(
), 周勇2, 杨伟1, 姚涞1(
), 蒋梦蝶1, 聂江文1, 朱波1, 刘章勇1
收稿日期:2024-09-02
接受日期:2025-05-07
出版日期:2025-11-15
发布日期:2025-11-17
通讯作者:
姚涞
作者简介:易丽霞 E-mail:yilixia525@163.com;
基金资助:
Lixia YI1(
), Yong ZHOU2, Wei YANG1, Lai YAO1(
), Mengdie JIANG1, Jiangwen NIE1, Bo ZHU1, Zhangyong LIU1
Received:2024-09-02
Accepted:2025-05-07
Online:2025-11-15
Published:2025-11-17
Contact:
Lai YAO
摘要:
为探究黑麦草配施尿素对稻田土壤中氨挥发的影响,以南方水稻-绿肥(黑麦草)轮作模式为研究对象进行盆栽试验,设置5种配施比例:单施尿素(CF)、25%黑麦草+75%尿素(25%RG)、50%黑麦草+50%尿素(50%RG)、75%黑麦草+25%尿素(75%RG)和单施黑麦草(100%RG),所有处理施氮量均为100 mg N?kg-1风干土,监测不同处理下水稻季的氨挥发速率、水稻产量和土壤环境指标。结果表明,各处理氨挥发速率均在尿素施用后迅速增加,氨挥发排放峰值随黑麦草替代尿素比例的增加而降低。氨挥发累计量的大小依次为CF>25%RG>50%RG>75%RG>100%RG,其中最大值为30.53 mg·m-2,最小值为22.07 mg·m-2。与CF处理相比,黑麦草还田处理氨挥发累计量分别降低4.8%、17.2%、20.7%和27.7%,其中50%RG的排放因子(单位氮肥投入的氨排放强度)显著低于CF(P<0.05)。25%RG和50%RG处理的水稻产量与CF之间无显著差异,但50%RG处理的氨挥发排放强度最低,与其他处理差异显著(P<0.05)。土壤温度、pH、铵态氮和硝态氮含量均显著影响稻田氨挥发速率(P<0.05)。综上,50%RG处理在兼顾水稻产量的同时能够有效减缓稻田土壤氨挥发的损失,对减少稻田氮素损失和保护生态环境具有一定指导意义。
中图分类号:
易丽霞, 周勇, 杨伟, 姚涞, 蒋梦蝶, 聂江文, 朱波, 刘章勇. 黑麦草还田替代尿素对稻田土壤氨挥发的影响[J]. 中国农业科技导报, 2025, 27(11): 186-194.
Lixia YI, Yong ZHOU, Wei YANG, Lai YAO, Mengdie JIANG, Jiangwen NIE, Bo ZHU, Zhangyong LIU. Effect of Ryegrass Return to Field as Substitute for Urea on Ammonia Volatilization from Paddy Soils[J]. Journal of Agricultural Science and Technology, 2025, 27(11): 186-194.
处理 Treatment | 尿素总量 Total urea amount/(g·m-2) | 绿肥量 Green fertilizer amount/(g·m-2) |
|---|---|---|
| CF | 0.64 | 0.0 |
| 25%RG | 0.48 | 7.2 |
| 50%RG | 0.32 | 14.3 |
| 75%RG | 0.16 | 21.5 |
| 100%RG | 0.00 | 28.7 |
表 1 各处理施肥量
Table 1 Fertilizer application rate for each treatment
处理 Treatment | 尿素总量 Total urea amount/(g·m-2) | 绿肥量 Green fertilizer amount/(g·m-2) |
|---|---|---|
| CF | 0.64 | 0.0 |
| 25%RG | 0.48 | 7.2 |
| 50%RG | 0.32 | 14.3 |
| 75%RG | 0.16 | 21.5 |
| 100%RG | 0.00 | 28.7 |
图2 不同施肥处理下的氨挥发累计量和氨排放因子注:不同小写字母表示不同处理间在P<0.05水平差异显著。
Fig. 2 Cumulative ammonia volatilization and ammonia emission factors under different fertilization treatmentsNote:Different lowercase letters indicate significant differences between different treatments at P<0.05 level.
| 处理Treatment | 头季First season | 再生季Regeneration season | 总产量 Total output/(g·m-2) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 穗数Number of ears | 总粒数Total grains | 结实率 Grain filling/% | 千粒重 1 000-grain weight/g | 产量Yield/(g·m-2) | 穗数Number of ears | 总粒数Total grains | 结实率 Grain filling /% | 千粒重 1 000-grain weight/g | 产量Yield/(g·m-2) | ||
| CF | 9 a | 798 a | 91.5 a | 28.3 a | 719.6 a | 5 a | 92 a | 72.8 a | 26.2 a | 76.7 a | 796.3 a |
| 25%RG | 8 ab | 743 b | 92.2 a | 29.4 a | 695.8 a | 4 a | 93 a | 71.9 a | 26.3 a | 77.9 a | 773.7 a |
| 50%RG | 8 ab | 733 c | 85.6 ab | 28.6 a | 667.6 a | 4 a | 91 a | 67.9 b | 27.5 a | 79.6 a | 747.2 a |
| 75%RG | 6 c | 558 c | 87.0 a | 31.6 a | 560.0 b | 3 a | 89 a | 67.6 b | 27.6 a | 78.3 a | 639.2 b |
| 100%RG | 4 c | 536 c | 81.7 b | 30.1 a | 513.8 b | 5 a | 90 a | 72.4 a | 28.3 a | 81.1 a | 594.9 b |
表 2 各施肥配比下的水稻产量
Table 2 Rice yield under different fertilization ratios
| 处理Treatment | 头季First season | 再生季Regeneration season | 总产量 Total output/(g·m-2) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 穗数Number of ears | 总粒数Total grains | 结实率 Grain filling/% | 千粒重 1 000-grain weight/g | 产量Yield/(g·m-2) | 穗数Number of ears | 总粒数Total grains | 结实率 Grain filling /% | 千粒重 1 000-grain weight/g | 产量Yield/(g·m-2) | ||
| CF | 9 a | 798 a | 91.5 a | 28.3 a | 719.6 a | 5 a | 92 a | 72.8 a | 26.2 a | 76.7 a | 796.3 a |
| 25%RG | 8 ab | 743 b | 92.2 a | 29.4 a | 695.8 a | 4 a | 93 a | 71.9 a | 26.3 a | 77.9 a | 773.7 a |
| 50%RG | 8 ab | 733 c | 85.6 ab | 28.6 a | 667.6 a | 4 a | 91 a | 67.9 b | 27.5 a | 79.6 a | 747.2 a |
| 75%RG | 6 c | 558 c | 87.0 a | 31.6 a | 560.0 b | 3 a | 89 a | 67.6 b | 27.6 a | 78.3 a | 639.2 b |
| 100%RG | 4 c | 536 c | 81.7 b | 30.1 a | 513.8 b | 5 a | 90 a | 72.4 a | 28.3 a | 81.1 a | 594.9 b |
图3 不同施肥处理下氨挥发排放强度注:不同小写字母表示不同处理间在P<0.05水平差异显著。
Fig. 3 Emission intensity of ammon ia volatilization under different fertilization treatmentsNote:Different lowercase letters indicate significant differences between different treatments at P<0.05 level.
图5 土壤指标与稻田土壤氨挥发的相关性分析注:*表示在P<0.05水平显著相关。
Fig. 5 Correlation analysis of soil indexes and ammonia volatilization from paddy soilNote: * indicates significant correlation at P<0.05 level.
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