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 in | Guanʻgai paishui xuebao Vol. 40; no. 7; pp. 113 - 121 |
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Main Authors | , , , , |
Format | Journal Article |
Language | Chinese 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 | |
Online Access | Get full text |
ISSN | 1672-3317 |
DOI | 10.13522/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。 |
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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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Author_xml | – sequence: 1 givenname: QIAN surname: Zheng fullname: Zheng, QIAN – sequence: 2 fullname: FENG Shaoyuan – sequence: 3 fullname: ZHUANG Xudong – sequence: 4 givenname: Hao surname: YU fullname: YU, Hao – sequence: 5 fullname: YUAN Chengfu |
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Copyright | Copyright Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 2021 Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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Keywords | 暗管排水 河套灌区 控制排水 葵花 RZWQM2 |
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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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