植物生态学报 ›› 2005, Vol. 29 ›› Issue (4): 577-583.DOI: 10.17521/cjpe.2005.0077
肖玉1,2(), 谢高地1, 鲁春霞1, 丁贤忠1, 吕耀1
收稿日期:
2004-05-08
接受日期:
2005-03-15
出版日期:
2005-05-08
发布日期:
2005-07-31
作者简介:
E-mail: xiaoy@igsnrr.ac.cn
基金资助:
XIAO Yu1,2(), XIE Gao-Di1, LU Chun-Xia1, DING Xian-Zhong1, LÜ Yao1
Received:
2004-05-08
Accepted:
2005-03-15
Online:
2005-05-08
Published:
2005-07-31
摘要:
该文以2002年在上海市奉贤县五四农场进行的稻田生态系统田间实验为基础,对尿素施用对稻田生态系统气体调节功能(释放O2和温室气体调节)的影响进行研究。研究结果表明:1)在水稻(Oryza sativa)生长期间,施加尿素能显著增加稻田日O2释放量及其价值量;2)在水稻生长期间,施加尿素稻田综合CO2的通量及其价值并不比未施肥稻田存在显著优势,尿素施用能明显增强稻田N2O排放通量,降低稻田CH4排放通量。尿素施用对温室气体调节具有正效应,促进稻田对温室气体吸收。
肖玉, 谢高地, 鲁春霞, 丁贤忠, 吕耀. 施肥对稻田生态系统气体调节功能及其价值的影响. 植物生态学报, 2005, 29(4): 577-583. DOI: 10.17521/cjpe.2005.0077
XIAO Yu, XIE Gao-Di, LU Chun-Xia, DING Xian-Zhong, LÜ Yao. THE IMPACT OF UREA AMENDMENTS ON ATMOSPHERIC GAS REGULATION SERVICES IN RICE PADDY ECOSYSTEMS AND THEIR VALUATION. Chinese Journal of Plant Ecology, 2005, 29(4): 577-583. DOI: 10.17521/cjpe.2005.0077
处理 Treatment | 播种后75 d 75 days after seeding | 播种后86 d 86 days after seeding | 播种后98 d 98 days after seeding | 播种后120 d 120 days after seeding | ||||
---|---|---|---|---|---|---|---|---|
未施肥 Unfertilized | 5 817±355** | 10 500±1 067* | 16 170±1 313* | 13 881±1 193** | ||||
施肥 Fertilized | 10 038±477** | 17 157±2 590* | 26 460±3 377* | 23 982±1 530** |
表1 不同生育期水稻生物生产量(平均值±标准差)
Table 1 The biomass of paddy during the different stages (Mean±SD)
处理 Treatment | 播种后75 d 75 days after seeding | 播种后86 d 86 days after seeding | 播种后98 d 98 days after seeding | 播种后120 d 120 days after seeding | ||||
---|---|---|---|---|---|---|---|---|
未施肥 Unfertilized | 5 817±355** | 10 500±1 067* | 16 170±1 313* | 13 881±1 193** | ||||
施肥 Fertilized | 10 038±477** | 17 157±2 590* | 26 460±3 377* | 23 982±1 530** |
播种后天数 (d) Days after seeding | 处理 Treatment | 日释放O2量 O2 emission per day (kg·hm-2·d-1) | 经济价值 Economic value (yuan·hm-2·d-1) |
---|---|---|---|
0~75 | 不施肥 Unfertilized | 92.30±5.63* | 34.75±2.12* |
施肥 Fertilized | 159.27±7.57* | 59.96±2.85* | |
75~86 | 不施肥 Unfertilized | 506.62±77.02 | 190.72±29.00 |
施肥 Fertilized | 770.15±127.14 | 289.93±47.86 | |
86~98 | 不施肥 Unfertilized | 306.70±13.30* | 115.46±5.01* |
施肥 Fertilized | 503.21±33.95* | 189.44±12.78* |
表2 稻田生态系统释放O2的物理量和价值量变化(平均值±标准差)
Table 2 The variation of O2 emissions from paddy fields and their values (Mean±SD)
播种后天数 (d) Days after seeding | 处理 Treatment | 日释放O2量 O2 emission per day (kg·hm-2·d-1) | 经济价值 Economic value (yuan·hm-2·d-1) |
---|---|---|---|
0~75 | 不施肥 Unfertilized | 92.30±5.63* | 34.75±2.12* |
施肥 Fertilized | 159.27±7.57* | 59.96±2.85* | |
75~86 | 不施肥 Unfertilized | 506.62±77.02 | 190.72±29.00 |
施肥 Fertilized | 770.15±127.14 | 289.93±47.86 | |
86~98 | 不施肥 Unfertilized | 306.70±13.30* | 115.46±5.01* |
施肥 Fertilized | 503.21±33.95* | 189.44±12.78* |
播种后天数(d) Days after seeding | CH4通量的F值 F value of CH4 fluxes | N2O通量的F值 F value of N2O fluxes | CO2通量的F值 F value of CO2 fluxes |
---|---|---|---|
69 | 12.15* | 0.72 | 0.43 |
72 | 10.99* | 21.30* | 110.28** |
75 | 0.31 | 27.40** | 14.02* |
79 | 6.86 | 11.65* | 28.88** |
87 | 0.58 | 163.71** | 8.18* |
93 | 9.29* | 0.47 | 25.96** |
99 | 58.86** | 78.07** | 0.08 |
107 | 29.71** | 9.15* | 19.66* |
表3 施肥和不施肥稻田生态系统CH4、N2O和CO2通量显著性差异检验
Table 3 The test of significant difference of the fluxes of CH4, N2O and CO2 from fertilized and unfertilized paddy ecosystems
播种后天数(d) Days after seeding | CH4通量的F值 F value of CH4 fluxes | N2O通量的F值 F value of N2O fluxes | CO2通量的F值 F value of CO2 fluxes |
---|---|---|---|
69 | 12.15* | 0.72 | 0.43 |
72 | 10.99* | 21.30* | 110.28** |
75 | 0.31 | 27.40** | 14.02* |
79 | 6.86 | 11.65* | 28.88** |
87 | 0.58 | 163.71** | 8.18* |
93 | 9.29* | 0.47 | 25.96** |
99 | 58.86** | 78.07** | 0.08 |
107 | 29.71** | 9.15* | 19.66* |
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