Research On Soil Moisture Dynamics Forecasting And Yellow River Water Demand In Sanyizhai Irrigation District

With the rapid economic and social development, three water problems isbecoming more and more serious in China. In particular, water shortage has beenbottleneck restricting the development of our social economy,which makes people toconstantly conduct the related aspects research of water conservation. Agriculture isthe major water users in all sectors,which has tremendous potential for saving water.Therefore, the study on the change discipline of soil moisture and water demand ofirrigation district have great significance on agricultural water-saving and food-increasing.This article summarizes and analyzes the data of irrigation district, calculates theirrigation crop water requirements,and builds dynamic prediction model of soilmoisture content. And then,this article calculates water demand for irrigation and theamount of water from the Yellow River of irrigation district. The main contents ofthis article are as follows:(1)The collection and collation of basic data of irrigation district, and thesummary of current research both at home and abroad.(2)The calculation of irrigated crop water requirement. This article calculatesirrigated crop water requirements by calculating the irrigated cropevapotranspiration.And then analyze qualitative and quantitative relationship betweenirrigated crop water requirements and its factors.(3)To build dynamic prediction model of soil moisture by neural network model.(4)To calculate water demand for irrigation. This article calculates waterdemand for irrigation and the amount of water from the Yellow River of irrigationdistrict, analysis the actual amount of water from the Yellow River and the dateCalculated.