基于APSIM模型小麦生育期需水量的模拟分析  

Simulation on water requirement of wheat during growth period by APSIM

作　　者：雷娟娟[1] 闫丽娟[2] 李广[1,3] 聂志刚[4] 王钧[4] 董莉霞[4] 

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070 [3]甘肃农业大学林学院,甘肃兰州730070 [4]甘肃农业大学信息科学技术学院,甘肃兰州730070

出　　处：《草业科学》2016年第5期871-877,共7页Pratacultural Science

基　　金：国家自然科学基金(31560343;31560378);甘肃省科技支撑计划(144NKCA038);甘肃省高等学校基本科研业务费项;干旱生境作物学重点实验室开放基金(GSCS-2010-11);甘肃省高等学校科研项目(2014A-058);甘肃省青年基金(1506RJYA005)

摘　　要：为探讨小麦(Triticum aestivum)生育期水资源的合理利用,本研究运用APSIM模型模拟不同生育期降水量变化条件下小麦的产量,并求得不同生育期小麦需水量的阈值。结果表明,区域降水年型基本呈旱涝交替出现;小麦生育期总需水量为325.3mm;其中,出苗期、拔节期、抽穗期、旗叶期、开花期和灌浆期需水量分别为34.72、80.6、67.1、43.81、58.67和30.4mm,分别占小麦生育期降水总量的10.67%、27.85%、20.63%、13.47%、18.04%和9.35%。出苗期、拔节期、抽穗期、旗叶期、开花期和灌浆期平均降水亏缺率分别为70.78%、48.83%、46.22%、40.35%、75.66%和-121.05%;春小麦需水关键期为出苗期、拔节期、开花期。To find the rational use of water resources for wheat growth periods,this study used the APSIM model to simulate wheat yield under different growth periods with changeable rainfall and estimate the threshold value for requirement of wheat for water at different growth periods.This study showed that the regional precipitation pattern generally showed an alternation from droughts to floods,and the requirement of wheat for water during whole growth periods was 325.3mm,in which the requirements of wheat for water during emergencing,jointing,heading,flag leaf,flowering and grain filling periods were 34.72,80.6,67.1,43.81,58.67 and 30.4mm,respectively,and accounting for 10.67%,27.85%,20.63%,13.47%,18.04% and 9.35% of total precipitation during wheat growth periods.Precipitation deficitwas 70.78%,48.83%,46.22%,40.35%,75.66%,-121.05% at,jointing,heading,flag leaf,flowering,grain filling period,respectively,which indicated that the key periods of spring wheat for requiring water were emergencing,jointing and flowering period.

关 键 词：APSIM 小麦生育期 需水量 小麦产量 

分 类 号：S512.1[农业科学—作物学]