基于缺水率模型的蓄水型水田灌区旱情预报

发布时间：2018-03-20 15:41

本文选题：缺水率模型　切入点：水田灌区　出处：《人民长江》2017年03期 　论文类型：期刊论文

【摘要】：频发的干旱灾害制约着我国社会经济的发展,其中农业干旱灾害的危害尤为明显。以江西省莲花县楼梯蹬水库灌区、罗卜冲水库灌区、河江水库灌区这3个以蓄水型水源为主的水田灌区为研究对象,在考虑水利工程对农业干旱影响的基础上,通过实地调查走访、理论联系实践的方式建立了各灌区的缺水率模型,以预报其农业旱情。结果表明,分析得出的水利用系数与实地调查结果基本吻合;且经对比计算,缺水率模型比连续无雨日数更适合评估水田灌区干旱程度,说明该模型可运用于以蓄水水源为主的水田灌区农业旱情的预测。
[Abstract]:Frequent drought disasters restrict the social and economic development of our country, especially the agricultural drought disasters. In the irrigation area of staircase and reservoir in Lianhua County, Jiangxi Province, the irrigation area of Luobchong Reservoir, the irrigation area of Luobchong Reservoir, is very serious. The three paddy irrigation areas with water storage as the main source of water in the irrigation area of the Hejiang Reservoir are taken as the research objects. On the basis of considering the impact of water conservancy projects on the agricultural drought, they are visited through field investigation. In order to forecast the agricultural drought situation, the water shortage rate model of each irrigation district is established by combining theory with practice. The results show that the water utilization coefficient obtained by the analysis is basically in line with the field investigation results, and is calculated by comparison and calculation. The model of water shortage rate is more suitable than the number of continuous rainy days to evaluate the drought degree of paddy field irrigation area, which indicates that the model can be used to predict the agricultural drought situation of paddy field irrigation area with water storage source as the main source.
【作者单位】：江西省水利科学研究院;江西省鄱阳湖水资源与环境重点实验室;
【分类号】：S423

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