当前位置: 首页 > 文章 > 基于Feddes模型的干旱区滴灌幼龄枣树根系特征数值模拟 节水灌溉 2016 (3) 11-14
Position: Home > Articles > Numerical Simulation of Young Jujube Root Characteristics Under Drip Irrigation in Arid Area Based on Feddes Model Water Saving Irrigation 2016 (3) 11-14

基于Feddes模型的干旱区滴灌幼龄枣树根系特征数值模拟

作  者:
马亮;魏光辉;王婷;马英杰
单  位:
新疆农业大学水利与土木工程学院;新疆塔里木河流域管理局
关键词:
干旱区;滴灌;幼龄枣树;根系分布;数值模拟
摘  要:
研究滴灌幼龄枣树根系密度分布与吸水特征,能够为制定枣树灌溉制度、提出丰产与节水相协调的田间水分管理模式提供重要参考。以幼龄期滴灌枣树根系为研究对象,采用剖面挖掘和分层取样法采集枣树根系,利用Delta-tcan软件对枣树吸收根的根长进行分析。结果表明:实测根系密度函数与线性函数的拟合度最优,模型相关系数为0.907,通过了显著性水平为0.01的相关性检验,平均相对误差为8.32%,均方根误差为0.206mm/cm3;线性函数下的土壤水分模拟值和实测值的误差值也相对较小,其最大相对误差为2.85%,平均相对误差为1.83%,均方根误差为0.238。
译  名:
Numerical Simulation of Young Jujube Root Characteristics Under Drip Irrigation in Arid Area Based on Feddes Model
作  者:
MA Liang;WEI Guang-hui;WANG Ting;MA Ying-jie;School of Water Resources and Civil Engineering,Xinjiang Agricultural University;Bureau of Xinjiang Tarim River Basin Management;
关键词:
arid area;;drip irrigation;;young jujube;;root distribution;;numerical simulation
摘  要:
The study on young jujube root distribution and water absorption characteristic under drip irrigation can provide an important reference for the development of jujube irrigation system and field water management modes with the coordination of high yield and water saving.This study takes jujube root under drip irrigation as the research object,uses profile digging and layered to sample acquisition jujube root,and uses Delta-tcanacquire software to analyze the root length.The results show that:the fitting degree of measured root density with linear function is the best,the model correlation coefficient is 0.907,the average relative error is 8.32%,the root mean square error is 0.206mm/cm3;the error between the soil moisture simulation value and field measured value is small,the maximum relative error is 2.85%,the average relative error is 1.83%,and the root mean square error is 0.238.

相似文章

计量
文章访问数: 14
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊