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当前位置: 首页 > 文章 > 以涝渍连续抑制天数为冬小麦排水指标的试验 农业工程学报 2010,26 (8) 66-70
Position: Home > Articles > Study on continuous days of water logging and excessive soil water as drainage index of wheat Transactions of the Chinese Society of Agricultural Engineering 2010,26 (8) 66-70

以涝渍连续抑制天数为冬小麦排水指标的试验

作  者：
邵光成;俞双恩;刘娜;徐立波
单  位：
河海大学南方地区高效灌排与农业水土环境教育部重点实验室;河海大学水利水电学院;南京信息工程大学经管学院;安徽省定远水务渔业局
关键词：
涝灾;模型;排水;冬小麦;抽穗开花期;涝渍连续抑制天数
摘  要：
为了探讨在冬小麦抽穗开花期以涝渍连续抑制天数作为排水指标的可能性,该文利用测坑试验研究了冬小麦抽穗开花期不同涝渍处理对其生理指标及产量的影响,建立了作物相对产量Ry(涝渍胁迫处理下小麦产量与对照的比值)与涝渍连续抑制天数CSDI的关系模型。结果表明,涝渍处理对冬小麦光合速率、气孔导度和蒸腾速率具有明显的抑制作用,在地表水累积深度SFW相同的情况下,地下水埋深小于50cm的累积深度SEW50越大,冬小麦减产越严重;在单纯受渍情况下,冬小麦相对产量Ry随SEW50的增大而呈减小的趋势,但各处理之间差异不显著。冬小麦相对产量Ry与SEW50和CSDI均具有较好的线性关系;涝害权重系数CW是一个随涝渍状态而变的状态变量,说明在涝渍连续情况下,用涝渍连续抑制天数作为控制排水指标比较合理。
译  名：
Study on continuous days of water logging and excessive soil water as drainage index of wheat
作  者：
Shao Guangcheng 1,2 ,Yu Shuang’en 1,2 ,Liu Na 3 ,Xu Libo 4 (1.Key Laboratory of High-Effective Irrigation and Drainage and Agricultural Water and Soil Environment in Southern China, Ministry of Education,Hohai University,Nanjing 210098,China; 2.College of Water Conservancy and Hydropower,Hohai University,Nanjing 210098,China; 3.School of Economics and Management,Nanjing University of Information Science&Technology,Nanjing 210044,China; 4.Water Affairs and Fishery Industry Bureau of Dingyuan County,Dingyuan 233200,China)
关键词：
flood damage,models,drainage,wheat,heading and flowering period,continuous stress-day index of water logging and excessive soil water
摘  要：
To explore the possibility of taking continuous stress-day from surface and subsurface water logging(CSDI) as drainage index during the heading and flowering period of winter wheat,influence of different continuous stress-day from surface and subsurface water logging during heading and flowering period on yield of winter wheat by test pits was studied.Model about relative crop yield and CSDI was established.The results showed that water logging and excessive soil water markedly inhibited leaf photosynthesis stomatal conductance and transpiration rate.The bigger of continuous dynamic state of groundwater,the more serious yield reduction was at the same cumulative depth of surface water.The relative yield decreased with the increase of continuous dynamic state of groundwater,however,the difference among the treatments was not significant.There was better linear relationship between crop relative yield and SEW50 and CSDI. Weight coefficient of water logging(CW)was a state variable which changed with status of surface and subsurface water logging.It was showed that the utilization of CSDI was reasonable in determination of controlled drainage index under the condition of continuous stress from surface and subsurface water logging.

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