摘要
土壤含水率的空间分布是影响农业灌溉决策的关键因素。采用3S技术对灌区的土壤含水率空间分布进行探索,以土壤含水率为预报对象,结合作物生长情况和气象预报,以田间水量平衡方程为理论基础,利用土壤含水率预测灌区农业灌溉需水量。结果表明:小开河灌区5月下旬的预测需水量为621.77万m^(3),与灌区的统计数据一致,基于3S的灌区农业灌溉需水量预测技术可实现灌区的精准灌溉。
The spatial distribution of soil water content is a key factor affecting agricultural irrigation decisions.In this study,3S technology was adopted to explore the spatial distribution of soil water content in the irrigation area.With soil water content as the main forecast object,combined with the weather forecast and the growth of planted crops,and based on the field water balance equation as the theoretical basis,the agricultural irrigation water requirement in the irrigation area was estimated by using soil water content in the irrigation area,and its spa⁃tial distribution was analyzed.The results could provide scientific basis for rational water use and agricultural water⁃saving irrigation in irriga⁃ted areas,and also provide technical support for scientific and rational water⁃saving potential assessment.The results show that the predicted water demand of Xiaokaihe irrigation area in late May is 6217700 m3,which is consistent with the statistics of the irrigation area.The pre⁃diction technology of agricultural irrigation water demand based on 3S can realize the precision irrigation of irrigation area.
作者
梁冰洁
杨芸
王军涛
常红娟
王力
LIANG Bingjie;YANG Yun;WANG Juntao;CHANG Hongjuan;WANG Li(Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission,Zhengzhou 450003,China;Henan Engineering Research Center of Rural Water Environment Improvement,Zhengzhou 450003,China;Henan Key Laboratory of Ecological Environment Protection and Restoration of the Yellow River Basin,Zhengzhou 450003,China;Binzhou Yellow River Irrigation Service Center,Binzhou 256600,China;Binzhou City Public Utility Service Center,Binzhou 256600,China)
出处
《人民黄河》
CAS
北大核心
2023年第8期26-31,共6页
Yellow River
基金
水利部水利技术示范项目(SF-202303)
水利部重大科技项目(SKR2202020)
黄科院引黄灌溉工程技术研究中心科技发展基金资助项目(2022GGZX-FZJJ003)
中央级公益性科研院所基本科研项目(HKY-JBYW-2023-26)。
关键词
土壤墒情
水量平衡
需水量模型
农业灌溉
预测
小开河灌区
soil moisture content
water balance
water demand model
agricultural irrigation
prediction
Xiaokaihe irrigation area
