| 基于DSSAT模型的河南省冬小麦需水量分析 |
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| 引用本文： | 陈丹丹,李国强,张杰,臧贺藏,胡峰,郑国清.基于DSSAT模型的河南省冬小麦需水量分析[J].河南农业科学,2017,46(2). |
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| 作者姓名： | 陈丹丹 李国强 张杰 臧贺藏 胡峰 郑国清 |
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| 作者单位： | 1. 河南省农业科学院 农业经济与信息研究所,河南 郑州450002;河南省智慧农业工程技术研究中心,河南 郑州450002;2. 河南省农业科学院 农业经济与信息研究所,河南 郑州450002;河南省智慧农业工程技术研究中心,河南 郑州450002;农作物种植监测与预警河南省工程实验室,河南 郑州450002;3. 河南省农业科学院 农业经济与信息研究所,河南 郑州450002;农作物种植监测与预警河南省工程实验室,河南 郑州450002 |
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| 基金项目： | 河南省科技攻关项目，河南省重大科技专项，河南省重点科技攻关计划项目，河南省超级产粮大省奖励资金扶持粮油良种培育项目(推广类) |
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| 摘 要： | 为定量评估河南省不同生态地点冬小麦需水量变化特征,应用DSSAT模型模拟了充分灌溉、雨养不灌溉条件下河南省15个地点连续10 a(2003—2012年)冬小麦产量、田间蒸散量、作物蒸腾量、土壤蒸发量等,分析了灌溉增产以及水分生产率的分布规律,并计算河南省不同地点平均需水量和缺水量。结果表明:充分灌溉条件下,河南省15个生态地点10 a间冬小麦平均产量介于7 847~9 565 kg/hm~2,作物蒸腾量介于319~380 mm,土壤蒸发量介于96~166 mm,田间蒸散量介于445~539 mm,水分生产率介于1.67~1.98 kg/(hm~2·m~3);雨养不灌溉条件下,15个生态地点10 a间冬小麦平均产量介于1 927~6 260 kg/hm~2,作物蒸腾量介于66~244 mm,土壤蒸发量介于120~195 mm,田间蒸散量介于209~370 mm,水分生产率介于0.79~2.17 kg/(hm~2·m~3)。15个生态地点10 a间灌溉增产介于1 594~6 698 kg/hm~2,总体呈中北部较高南部较低。15个生态地点10 a间需水量介于395~452 mm,河南省中东部及南部需水量相对较低;缺水量介于76~282 mm,整体呈北高南低。研究结果可为河南省冬小麦水分定量化管理措施的制定提供参考。
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| 关 键 词： | 河南省 冬小麦 DSSAT模型 需水量 时空分布 |
Analysis on Water Demand of Winter Wheat in Henan Province Based on DSSAT Model |
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| Abstract: | In order to quantitatively evaluate the change of winter wheat water requirement in different regions of Henan province,DSSAT model was applied to simulate the winter wheat yield,evapotranspiration ( ET) , transpiration ( EP ) and soil evaporation ( ES ) under full irrigation ( FI ) and no irrigation ( NI ) conditions in 15 ecological points for 10 consecutive years ( 2003 to 2012 ) in Henan province. The distribution of irrigation production and the water productivity were analyzed,and the average water demand and water shortage in different ecological points were calculated. The results showed that the average yield of winter wheat was 7847—9565 kg/ha,ET value was 445—539 mm,EP value was 319—380 mm,ES value was 96—166 mm and water productivity was 1. 67—1. 98 kg/(ha·m3)under FI condition. The average yield of winter wheat was 1927—6260 kg/ha,ET value was 209—370 mm,EP was 66—244 mm,ES was 120—195 mm,and water productivity was 0. 79—2. 17 kg/(ha·m3)under NI condition. The increased yield by irrigation was 1594—6698 kg/ha in 15 ecological points, which was overall higher in north and middle region of Henan province,while lower in the south region. The average value of water demand was 395—452 mm in 15 ecological points, the water demand were relatively lower in middleeast and south region of Henan provine. The average value of water shortage was 76—282 mm,the water shortage for winter wheat was overall more in the north region of Henan province,while fewer in the south region. The above research results could provide reference for the development of quantitative management measures of winter wheat in Henan province. |
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| Keywords: | Henan province winter wheat DSSAT model water demand spatial-temporal distribution |
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