北疆春小麦蒸散规律及蒸散量估算研究  

Study on the law and simulation of evapotranspiration of spring wheat in northern Xinjiang

作　　者：慕彩芸[1] 马富裕[1] 郑旭荣[2] 程海涛[1] 李进云 张卫国 徐公赦 

机构地区：[1]石河子大学农学院新疆兵团绿洲生态农业重点实验室,新疆石河子832003 [2]石河子大学水利工程学院,新疆石河子832003 [3]新疆建设兵团农八师149团,新疆石河子832003 [4]新疆建设兵团农六师新湖总场,新疆王家渠831300

出　　处：《干旱地区农业研究》2005年第4期53-57,共5页Agricultural Research in the Arid Areas

基　　金：国家科技攻关西部开发科技行动项目(2002BAA901A37);国家高技术研究发展计划(863计划)项目(2001AA245041;2002AA2Z4201);农业部农业结构调整重大技术研究专项(2002-05-02B);新疆兵团绿洲生态农业重点实验室开放课题资助项目(200306)。

摘　　要：通过对2002～2003年北疆春小麦田试验数据的分析结果表明,北疆春小麦全生育期蒸散量在410～430mm左右,蒸散强度为4.11～4.14mm,蒸散量和蒸散强度均在抽穗～乳熟期达到最大,平均棵间蒸发占总蒸散量的比例为38.3%～42.0%。叶面积指数与蒸散强度关系极为密切,可用复合曲线方程来描述二者的关系。通过采用Penman-Montieth模式配合单值平均作物系数和水分胁迫系数估算农田蒸散量的方法,对当地春小麦田的日蒸散量进行估算,精确度检验结果表明该方法是切实可行的。By analyzing the experiment data of spring wheat in 2002 to 2003, it is showed that the evpotranspiration in whole growing period of spring wheat in Xinjiang is ranged form 410 mm to 430 mm, both the amount and intensity of evapotranspiration is the highest during heading to milk ripening stage. About 38.3%~42.0% of evapotranspiration is consumed by soil evaporation. There is a close relation between leaf area index and evpotranspiration intensity, which can be expressed by compound curve equation. The daily evapotranspiration of spring wheat field is simulated by using Penman-Monteith formula cooperated with crop coefficient and crop water stress index. The result indicates that this method is ideal in precision.

关 键 词：春小麦 蒸散量 叶面积指数 作物系数 水分胁迫系数 

分 类 号：S512.12[农业科学—作物学]