| Cite this article: | 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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| 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 |
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