基于RZWQM2模型的农田排水暗管优化布置研究

【目的】研究河套灌区葵花种植区暗管排水条件下农田土壤水分变化状态,探求当地适宜的农田排水暗管布置和控制排水方案。【方法】基于2018—2020年田间试验数据,对RZWQM2模型进行率定和验证,并利用该模型对不同排水暗管布置方案(同一间距不同埋深和同一埋深不同间距)和控制排水方案(不同时期不同排水口深度)下的土壤水分运移和作物生长情况进行数值模拟。【结果】①模型率定和验证阶段,砂土层土壤含水率RMSE为0.049~0.065 cm3/cm3,其余土层土壤含水率RMSE为0.012~0.037 cm3/cm3,累计排水量和产量MRE分别在5.88%和3.40%以下,地下水位、1 m土层土壤储水量和...

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Published inGuanʻgai paishui xuebao Vol. 40; no. 7; pp. 113 - 121
Main Authors Zheng, QIAN, FENG Shaoyuan, ZHUANG Xudong, YU, Hao, YUAN Chengfu
Format Journal Article
LanguageChinese
English
Published Xinxiang City Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 01.07.2021
扬州大学 水利科学与工程学院,江苏 扬州 225009
Subjects
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ISSN1672-3317
DOI10.13522/j.cnki.ggps.2021007

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Abstract 【目的】研究河套灌区葵花种植区暗管排水条件下农田土壤水分变化状态,探求当地适宜的农田排水暗管布置和控制排水方案。【方法】基于2018—2020年田间试验数据,对RZWQM2模型进行率定和验证,并利用该模型对不同排水暗管布置方案(同一间距不同埋深和同一埋深不同间距)和控制排水方案(不同时期不同排水口深度)下的土壤水分运移和作物生长情况进行数值模拟。【结果】①模型率定和验证阶段,砂土层土壤含水率RMSE为0.049~0.065 cm3/cm3,其余土层土壤含水率RMSE为0.012~0.037 cm3/cm3,累计排水量和产量MRE分别在5.88%和3.40%以下,地下水位、1 m土层土壤储水量和叶面积指数R2分别在0.798、0.817和0.912以上;②以现有排水暗管埋深1.5 m、间距45 m为基础,模拟得到采用埋深1.4 m、间距45 m的布置方案其地下水位抬高5.2 cm、排水量减少40.0%、增产85.3 kg/hm2;③采用雨季1.5 m、非雨季1.2 m排水口深度的控制排水方案,地下水位抬高2.2 cm、排水量减少46.0%、增产66.4 kg/hm2。【结论】RZWQM2模型能较好模拟排水条件下葵花种植区农田土壤水分变化,研究区推荐采用1.4 m埋深、45 m间距的排水暗管布置方案,在现有布置下雨季1.5 m、非雨季1.2 m的控制排水方案较为合适。
AbstractList S276.1; [目的]研究河套灌区葵花种植区暗管排水条件下农田土壤水分变化状态,探求当地适宜的农田排水暗管布置和控制排水方案.[方法]基于2018—2020年田间试验数据,对RZWQM2模型进行率定和验证,并利用该模型对不同排水暗管布置方案(同一间距不同埋深和同一埋深不同间距)和控制排水方案(不同时期不同排水口深度)下的土壤水分运移和作物生长情况进行数值模拟.[结果]①模型率定和验证阶段,砂土层土壤含水率RMSE为0.049~0.065 cm3/cm3,其余土层土壤含水率RMSE为0.012~0.037 cm3/cm3,累计排水量和产量MRE分别在5.88%和3.40%以下,地下水位、1 m土层土壤储水量和叶面积指数R2分别在0.798、0.817和0.912以上;②以现有排水暗管埋深1.5 m、间距45 m为基础,模拟得到采用埋深1.4 m、间距45 m的布置方案其地下水位抬高5.2 cm、排水量减少40.0%、增产85.3 kg/hm2;③采用雨季1.5 m、非雨季1.2 m排水口深度的控制排水方案,地下水位抬高2.2 cm、排水量减少46.0%、增产66.4 kg/hm2.[结论]RZWQM2模型能较好模拟排水条件下葵花种植区农田土壤水分变化,研究区推荐采用1.4 m埋深、45 m间距的排水暗管布置方案,在现有布置下雨季1.5 m、非雨季1.2 m的控制排水方案较为合适.
【目的】研究河套灌区葵花种植区暗管排水条件下农田土壤水分变化状态,探求当地适宜的农田排水暗管布置和控制排水方案。【方法】基于2018—2020年田间试验数据,对RZWQM2模型进行率定和验证,并利用该模型对不同排水暗管布置方案(同一间距不同埋深和同一埋深不同间距)和控制排水方案(不同时期不同排水口深度)下的土壤水分运移和作物生长情况进行数值模拟。【结果】①模型率定和验证阶段,砂土层土壤含水率RMSE为0.049~0.065 cm3/cm3,其余土层土壤含水率RMSE为0.012~0.037 cm3/cm3,累计排水量和产量MRE分别在5.88%和3.40%以下,地下水位、1 m土层土壤储水量和叶面积指数R2分别在0.798、0.817和0.912以上;②以现有排水暗管埋深1.5 m、间距45 m为基础,模拟得到采用埋深1.4 m、间距45 m的布置方案其地下水位抬高5.2 cm、排水量减少40.0%、增产85.3 kg/hm2;③采用雨季1.5 m、非雨季1.2 m排水口深度的控制排水方案,地下水位抬高2.2 cm、排水量减少46.0%、增产66.4 kg/hm2。【结论】RZWQM2模型能较好模拟排水条件下葵花种植区农田土壤水分变化,研究区推荐采用1.4 m埋深、45 m间距的排水暗管布置方案,在现有布置下雨季1.5 m、非雨季1.2 m的控制排水方案较为合适。
Author FENG Shaoyuan
YUAN Chengfu
Zheng, QIAN
ZHUANG Xudong
YU, Hao
AuthorAffiliation 扬州大学 水利科学与工程学院,江苏 扬州 225009
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YUAN Chengfu
ZHUANG Xudong
QIAN Zheng
YU Hao
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Keywords 暗管排水
河套灌区
控制排水
葵花
RZWQM2
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PublicationTitle_FL Journal of Irrigation and Drainage
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扬州大学 水利科学与工程学院,江苏 扬州 225009
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SubjectTerms Agricultural production
Calibration
Critical depth
Crop growth
Crop yield
Crops
Design parameters
Drainage
Drains
Experimental data
Groundwater
Groundwater levels
Helianthus
Irrigation
Leaf area
Leaf area index
Moisture content
Optimization
Parameter estimation
Rainy season
Rivers
Root zone
Salinization
Sandy soils
Seasons
Soil improvement
Soil salinity
Soil water
Soil water storage
Solute transport
Subsurface drains
Sunflowers
Water depth
Water flow
Water quality
Water storage
Water table
Title 基于RZWQM2模型的农田排水暗管优化布置研究
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