Dynamic Simulation of Korla Fragrant Pear Growth and Optimization of Drip Irrigation System Based on AquaCrop Model

ZHANG Jingrui; WANG Chunxia; MA Jianjiang; WANG Hongxin; WANG Jiaxin

doi:10.13870/j.cnki.stbcxb.2023.05.040

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Dynamic Simulation of Korla Fragrant Pear Growth and Optimization of Drip Irrigation System Based on AquaCrop Model

更新时间：2025-03-12

- Dynamic Simulation of Korla Fragrant Pear Growth and Optimization of Drip Irrigation System Based on AquaCrop Model
- Vol. 37, Issue 5, Pages: 328-336(2023)
- 作者机构：
  
  1. 石河子大学水利建筑工程学院,新疆,石河子,832000
  2. 现代节水灌溉兵团重点实验室,新疆,石河子,832000
  3. 新疆生产建设兵团第二师农业科学研究所,新疆,库尔勒,841000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2023.05.040
  CLC： S274.1
- Published：2023
- 稿件说明：
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ZHANG Jingrui, WANG Chunxia, MA Jianjiang, et al. Dynamic Simulation of Korla Fragrant Pear Growth and Optimization of Drip Irrigation System Based on AquaCrop Model[J]. 2023, 37(5): 328-336.
DOI：

ZHANG Jingrui, WANG Chunxia, MA Jianjiang, et al. Dynamic Simulation of Korla Fragrant Pear Growth and Optimization of Drip Irrigation System Based on AquaCrop Model[J]. 2023, 37(5): 328-336. DOI： 10.13870/j.cnki.stbcxb.2023.05.040.

摘要

为探究省力化栽培模式下库尔勒香梨园适宜的灌溉制度

依据4种灌溉定额(3 750

5 250

6 750

8 250 m3/hm2)条件下2年香梨的田间试验数据

通过冠层覆盖度、土壤含水量和蒸散强度(ETa)和产量指标

确定AquaCrop模型参数。设置不同灌水场景

综合考虑产量、水分利用效率和灌溉水利用效率

利用AquaCrop模型优化香梨灌溉制度。结果表明:Y2W3处理产量高出其余处理3.87%~16.86%

Y2W1处理水分利用效率高出其余处理2.88%~27.20%;AquaCrop模型模拟与试验地实测结果的决定系数(R2)、均方根误差(RMSE)、标准均方根误差(NRMSE)、拟合度指数(d)和Nash效率系数(NSE)评价指标表明

冠层覆盖度R2变化范围为0.89~0.93

土壤含水量d为0.92~0.98

ETa的RMSE为1.06~1.61 mm/d;AquaCrop模型预测15种不同场景

灌溉定额7 200 m3/hm2、灌水次数11次和灌溉周期14天的灌溉方案表现最优

其产量为6 793.62 kg/hm2

水分利用效率为10.90 kg/(hm2·mm)

灌溉水利用效率为1.03 kg/m3。AquaCrop作物生长模型可用于香梨产量预测和田间用水管理

其研究结果可为地表滴灌技术适用性选择提供依据。

Abstract

In order to explore the suitable irrigation system of Korla Fragrant Pear orchard under labor-saving cultivation mode

based on the two-year field test data of Fragrant Pear under four irrigation quotas (3 750

5 250

6 750 and 8 250 m3/hm2)

the AquaCrop model parameters were determined through using canopy coverage

soil water content

evapotranspiration (ETa) and yield index. Different irrigation scenarios were set up

and the yield

water use efficiency and yield were comprehensively considered

AquaCrop model was used to optimize the irrigation system of fragrant pear. The yield of Y2W3 treatment was 3.87%~16.86% higher than that of other treatments

and the water use efficiency of Y2W3 treatment was 2.88%~27.20% higher than that of other treatments. The evaluation indexes of determining coefficient (R2)

root mean square Error (RMSE)

standard root mean square error (NRMSE)

the Willmott's index of agreement (d) and Nash Sutcliffe efficiency (NSE) of the simulated and measured results of AquaCrop model showed that the canopy coverage R2 ranged from 0.89 to 0.93

the range of soil water content d was 0.92~0.98

the range of ETa RMSE was 1.06~1.61 mm/d. The AquaCrop model predicted 15 different scenarios

and the irrigation system with irrigation quota of 7 200 m3/hm2

irrigation frequency of 11 times and irrigation cycle of 14 days performed best

with a yield of 6 793.62 kg/hm2

water use efficiency of 10.90 kg/(hm2·mm) and irrigation water use efficiency of 1.03 kg/m3. AquaCrop growth model could be used for yield prediction and field water management of fragrant pears

and the results could provide a basis for the applicability selection of surface drip irrigation technology.

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