Simulation of the soil water content under different water deficits for apple trees via improved WOFOST-HYDRUS coupled model  

作　　者：Long Zhao Haoran Zhang Xinbo Zhao Yuehua Ding Yi Shi Ningbo Cui Zhaomei Qiu 

机构地区：[1]College of Horticulture and Plant Protection,Henan University of Science and Technology,Luoyang 471000,Henan,China [2]College of Agricultural Equipment Engineering,Henan University of Science and Technology,Luoyang 471023,Henan,China [3]College of Water Resource and Hydropower,State Key Lab of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China

出　　处：《International Journal of Agricultural and Biological Engineering》2025年第1期219-229,共11页国际农业与生物工程学报(英文)

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.52309050);the Key R&D and Promotion Projects in Henan Province(Science and Technology Development)(Grant No.232102110264);Youth Backbone Teacher Project of Henan University of Science and Technology(Grants No.13450013 and 13450010);the Key Scientific Research Projects of Colleges and Universities in Henan Province(Grant No.24B416001).

摘　　要：As a crucial fruit tree crop,the health and yield of apple trees are intricately linked to soil moisture conditions.This study aimed to integrate the enhanced WOFOST model with the HYDRUS model to simulate the growth and development of apple trees,as well as the dynamics of soil moisture under varying degrees of water deficit.The outputs of evapotranspiration(ET0)and leaf area index(LAI)from the WOFOST model during the apple growth phase were specifically integrated with HYDRUS-1D.These parameters served as intermediaries to assess the impact of different water deficit scenarios on apple tree growth and soil moisture content.The experimental design included three levels of water deficit treatments in addition to control,with irrigation volumes for the deficit treatments set at 85%,70%,and 55%of the control’s volume,respectively.The model-predicted LAI across all irrigation treatments exhibited an R^(2) range of 0.89-0.95,a normalized root mean square error(NRMSE)between 8.02%and 14.57%,and yield prediction errors ranging from 6.27%to 9.61%,closely aligned with empirical data.The accuracy of simulated soil moisture content was enhanced in the 0-30 cm layer,with a slight decrease in accuracy observed in the 30-60 cm layer.For each irrigation treatment,the R^(2) values for simulated soil moisture content ranged from 0.77 to 0.89 in the 0-30 cm layer and from 0.75 to 0.81 in the 30-60 cm layer.This study validated the capability of the WOFOST-HYDRUS model to accurately simulate the effects of varied water deficit treatments on soil moisture,LAI,and apple tree yield,providing valuable insights for developing optimal irrigation strategies.

关 键 词：growth model WOFOST-HYDRUS apple trees water simulation water deficit treatment 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]