扬州大学学报（农业与生命科学版）2024，Vol.45Issue(5)：31-37,7.DOI:10.16872/j.cnki.1671-4652.2024.05.004
基于土壤水分的旱田灌溉用水量估算
Estimation of irrigation water use of dry farmland by using soil moisture in Hebi city of Henan province
摘要
Abstract
Acquiring regional irrigation water use is of great significance to agricultural water resources management and its optimal allocation.How to acquire regional irrigation water use is still a great challenge for several disciplines,such as agricultural science,hydraulic science and geography.Considering the relationship between irrigation and soil moisture change,this study proposed a method for estimating irrigation water use by using soil moisture data.To achieve this goal,soil moisture and precipitation were regarded as the objects and their quantitative relationship was analyzed in this study by establishing three models,including linear model,logarithmic model and soil water balance model.After building models on every site,the relationship between soil moisture and precipitation is clear and it is feasible to estimate the irrigation water use on the condition that the soil moisture data is known.Estimation of irrigation water use was real-ized on the base of three models and soil moisture data.Firstly,the 16 sites which monitor soil moisture conditions in He-bi City were considered as objects of study,then the everyday meteorological data(temperature,precipitation,atmos-pheric pressure,wind speed,sunshine duration)and soil moisture data on the sites from 2015 to 2020(accumulated six years)were collected.Secondly,the eligible data of the previous four years were sifted and used to establish three models for estimating the quantity of input water on the soil surface based on soil moisture.Thirdly,the eligible data of the last two years were sifted and used to verify the established models on every site then judged the accuracy of the models.Tak-ing site 53990 for instance,the RMSE of linear model,logarithmic model and soil water balance model was 10.55 mm,10.3 mm and 8.62 mm respectively.The results showed that water soil balance model can better express the quantitative relationship between soil moisture and precipitation than linear model and logarithmic model.Depending on this conclu-sion,finally,the eligible soil moisture data sifted and known in the specific site was used to estimate the irrigation water use in the field by the relationship expressed in the water soil balance model.Consequently,compared with the amount of irrigation water data recorded,the irrigation water use estimated according to the water soil balance in this study was 14.19％lower than those recorded.The method proposed in this study is significant for acquiring regional irrigation water use.关键词
灌溉用水量/线性模型/对数模型/土壤水量平衡模型/土壤水分/降雨量Key words
irrigation water use/linear model/logarithmic model/soil water balance model/soil moisture/precipitation分类
农业科技引用本文复制引用
朱黎明,张文杰,张家豪,田桂治,魏庆伟..基于土壤水分的旱田灌溉用水量估算[J].扬州大学学报（农业与生命科学版）,2024,45(5):31-37,7.基金项目
中国气象局河南省农业气象保障与应用技术重点开放实验室应用技术研究基金项目(KM201929) （KM201929）
实景地理环境安徽省重点实验室开放课题(2022PGE002) （2022PGE002）
江苏省博士后科研资助计划项目(2020Z223) （2020Z223）
