| 引用本文: | 杨子荣,邹志科,罗文兵,等.南方平原灌区稻田氨挥发排放规律及影响因素研究[J].灌溉排水学报,2022,():-. |
| YANG Zirong,ZOU Zhike,LUO Wenbing,et al.南方平原灌区稻田氨挥发排放规律及影响因素研究[J].灌溉排水学报,2022,():-. |
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| 摘要: |
| 【目的】探究水、肥在中稻各生育阶段对氨挥发损失量及气象因子对中稻氨挥发速率的影响。【方法】以稻田为研究对象，在江西省灌溉试验中心站开展氨挥发田间试验，设置间歇灌溉（W1）和传统淹灌（W0）两种灌溉模式， 不施氮（N0，0 kg/hm2）、减量施氮（N1，135 kg/hm2）和常规施氮（N2，180 kg/hm2）三种施氮水平，分析不同灌溉模式和施肥量对中稻各生育阶段氨挥发损失量的影响，建立氨挥发速率和气象因子之间的回归方程。【结果】同一灌溉模式下，在一定范围内增施氮肥会增加氨挥发损失量；同等施氮水平下，间歇灌溉较传统淹灌会增加氨挥发损失；氨挥发损失主要发生在分蘖、拔节、抽穗三个时期，其氨挥发损失量之和占整个生育期氨挥发损失总量的一半以上；气象因子中，日照时长对氨挥发影响最大，呈正相关，其次为风速，呈负相关，最后是蒸发量，呈负相关。【结论】间歇灌溉相比传统淹灌会增大氨挥发损失，从整个生育阶段来看，氨挥发损失主要发生在生育中前期，氨挥发与日照时长呈正相关，与风速和蒸发量呈负相关。 |
| 关键词: 氨挥发；水肥管理；气象因子；平原灌区；显著性 |
| DOI： |
| 分类号:S143.1 |
| 基金项目:国家自然科学基金委员会-中华人民共和国水利部-中国长江三峡集团有限公司长江水科学研究联合(No.U2040213)及中央级公益性科研院所基本科研业务费资助项目(CKSF2019251/NY、CKSF2021299/NY)资助。 |
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| Study on Ammonia Volatilization Emission and Its Influencing Factors in Paddy Field in Southern Plain Irrigation Area |
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YANG Zirong1, ZOU Zhike2, LUO Wenbing2, XIAO Xin1, HUANG Shaozhe1, PAN Hongzhong1, LI Yalong2
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1.Yangtze University;2.Yangtze River Scientific Research Institute
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| Abstract: |
| 【Objective】The objective of this manuscript was to explore the effects of water and fertilizer on ammonia volatilization loss, as well as meteorological factors on ammonia volatilization rate in midseason rice at different growth stages.【Method】The paddy field was choosen as the research object, the field experiment of ammonia volatilization was carried out in the central station of irrigation experiment in Jiangxi Province. Two irrigation modes, namely intermittent irrigation (W1) and traditional flooding irrigation (W0), and three nitrogen levels, namely no nitrogen (N0,0 kg/hm2), reduced nitrogen (N1,135 kg/hm2 ) and conventional nitrogen (N2,180 kg/hm2) were set up.to analyze the effects of different irrigation modes and fertilization rates on ammonia volatilization loss at different growth stages of midseason rice. And the regression equation between ammonia volatilization rate and meteorological factors were established. 【Results】Under the same irrigation mode, the increase of nitrogen fertilizer application within a certain range will increase the ammonia volatilization loss. Under the same nitrogen application level, compared with flooded irrigation, the mode of intermittent irrigation will increase ammonia volatilization loss. Ammonia volatilization loss mainly occurs in tillering, jointing and heading stages, and the sum of ammonia volatilization loss accounts for more than half of the total ammonia volatilization loss. Among meteorological factors, sunshine duration has the greatest impact on ammonia volatilization, with positive correlation. Followed by wind speed, which is negatively correlated, and finally evaporation, which is also negatively correlated.【Conclusion】Compared with traditional flooding irrigation, intermittent irrigation could increase ammonia volatilization loss. From the whole growth stage, ammonia volatilization loss mainly occurs in the early and middle stages of growth. Ammonia volatilization is positively correlated with sunshine duration, and negatively correlated with wind speed and evaporation. |
| Key words: ammonia volatilization; water and fertilizer management; meteorological factor; plain irrigation area; significance |
