文章摘要
戴嘉璐, 李瑞平, 李聪聪, 鲁耀泽, 邹存菁.河套灌区不同水肥处理对玉米生长影响的AquaCrop模型模拟[J].水土保持学报,2021,35(3):312~319
河套灌区不同水肥处理对玉米生长影响的AquaCrop模型模拟
Simulation of Effects of Different Water and Fertilizer Treatments on Maize Growth with AquaCrop in Hetao Irrigated Area
投稿时间:2020-11-18  
DOI:10.13870/j.cnki.stbcxb.2021.03.043
中文关键词: 灌溉  施肥  玉米  AquaCrop模型  水肥利用效率
英文关键词: irrigation  fertilization  maize  AquaCrop model  water and fertilizer use efficiency
基金项目:国家自然科学基金项目(51839006)
作者单位E-mail
戴嘉璐1, 李瑞平1, 李聪聪1, 鲁耀泽2, 邹存菁3 1. 内蒙古农业大学水利与土木建筑工程学院, 呼和浩特 010018

2. 巴彦淖尔市水利科学研究所
, 内蒙古 巴彦淖尔 015000

3. 内蒙古河套灌区永济灌域管理局
, 内蒙古 巴彦淖尔 015000 
nmglrp@163.com 
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中文摘要:
      为探究内蒙古河套灌区玉米生长适宜的水肥管理方案,开展了不同灌水与施肥水平玉米田间试验。利用田间实测数据对AquaCrop模型进行了率定与验证,以此为基础,采用AquaCrop模型模拟分析了不同灌水和施肥条件下玉米产量和水分利用效率的变化规律。结果表明:(1)模型率定和验证过程中冠层覆盖度和生物量模拟值与实测值的R2分别介于0.74~0.99,0.87~0.99;NRMSE分别介于4.55%~12.32%,5.77%~27.07%;ENS分别介于0.90~0.99,0.85~0.99;各处理产量模拟值与实测值间R2分别为0.99,0.97;NRMSE分别为4.59%,3.42%,ENS分别为0.95,0.97;水分利用效率模拟值与实测值间R2分别为0.81,0.86;NRMSE分别为6.75%,13.85%,ENS分别为0.96,0.83。说明AquaCrop模型在河套灌区具有很好的适用性。(2)利用校验后的模型模拟了不同施肥水平下灌水量变化对玉米产量和水分利用效率的影响,当灌水量达270 mm后,继续增加灌水量,玉米产量和水分利用效率基本保持不变,甚至有所降低。(3)以稳产高效为目标,中肥条件下,灌水270 mm时玉米产量和水分利用效率均为各灌水量中的最优值。因此,推荐灌水270 mm、施肥375 kg/hm2为研究区保障玉米稳产高效的最优灌溉施肥组合。
英文摘要:
      In order to explore the water-fertilizer management strategy suitable for maize growth in the Hetao Irrigation District, Inner Mongolia, this study conducted a field experiment with different irrigation and fertilization levels. After the calibration and validationby observed data, the AquaCrop model was used to simulate the variation pattern of corn yield and water use efficiency (WUE) under different irrigation and fertilization levels. The results indicated:(1) The R2 values of simulated and measured canopy coverage and biomass were 0.74~0.99 and 0.87~0.99, respectively, during model calibration and validation. The NRMSE values ranged from 4.55% to 12.32% and 5.77% to 27.07%, respectively, while the ENS ranged from 0.90 to 0.99 and 0.85 to 0.99 respectively. The R2 values between the simulated and measured output values were 0.99 and 0.97, respectively, and NRMSE were 4.59% and 3.42%, and ENS were 0.95 and 0.97, respectively. The R2 between the simulated and measured WUE were 0.81 and 0.86, respectively, and NRMSE were 6.75% and 13.85%, and ENS were 0.96 and 0.83, respectively, indicating that AquaCrop model had a good applicability in the Hetao Irrigation District. (2) The verified model was used to simulate the effects of irrigation changes on maize yield and WUE at different fertilization levels. The results showed that when irrigation rate reached 270 mm and continued to increase, the maize yield and WUE remained basically unchanged or even decreased. (3) With stable yield and high efficiency as the target, under the medium fertilization, the optimal corn yield and WUE were given at 270 mm of irrigation. Therefore, we recommend 270 mm irrigation, 375 kg/hm2 fertilizing as the best combination to ensure the stable-yield and high-efficiency in the studied area.
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