查詢結果分析
來源資料
頁籤選單縮合
題 名 | 水田灌溉後迴歸水估算模式之建立及應用=Establishment and Application on Estimation Model of Return Flow in Paddy Fields after Irrigation |
---|---|
作 者 | 陳獻; 蔡西銘; 陳豐文; 陳靖薇; 劉日順; | 書刊名 | 農業工程學報 |
卷 期 | 51:2 民94.06 |
頁 次 | 頁41-61 |
分類號 | 434.2571 |
關鍵詞 | 迴歸水; 灌溉; 砂箱試驗; Return flow; Irrigation; Sandbox experiment; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究自1998-~2004年期間以水田水收支平衡為基礎理論,首先以桃園大圳第4支線4-5號池灌區進行現場觀測試驗,經試驗資料驗證砂箱試驗與現場觀測試驗結果趨近相似後,利用坡度可調式之砂箱模型進行試驗,推估桃園大圳灌區在不同坡度條件下(坡度為1/100、1/150、1/200)之四種土壤(粘土、粘質壤土、砂質壤土、砂質粘壤土)的迴歸水計算方程式,並以該諸方程式為基本計算式,依土壤別、、坡度及水路分佈總統為輸入條件,建立適用於桃園大圳灌區之迴歸水量估算模式;並以桃園大圳灌區為迴歸水估算模式之應用區域,當田間小給水路之輸水損失為20%,其引水量為灌溉計畫水深之1.25倍的正常灌溉下,桃園大圳各支線迴歸水佔引水量之比例約為29.41%~50.01%;而桃園大圳12條支線灌區總引水量為902,785□/day,所產生總迴歸水量為348,027□/day,其總迴歸水量佔總引水量之比例為38.55%。 |
英文摘要 | Water budget balance theorem is used in this research. Firstly, a field experiment is carried out at irrigation area of No.4-5 storage pond of the Taoyuan main canal during the period of 1998~2004. The data show that results of the sandbox experiment as similar to these of the field experiment. (S=1/100, 1/150, 1/200), the basic equations of return flow in Tao-Yuan Main Canal irrigation area for the different soils (clay, clay loam, sandy clay loam and sandy loam) can be obtained. A systematical estimated model of the regional return flow for Tao-Yuan Main Canal irrigation area will be established. According to the results of the estimated model, the return flow is 29.41%~50.01% in proportion to irrigation water in every secondary canal of Tao-Yuan Main Canal based on 20% water conveyance loss in farm ditches, and 1.25 times for planned water requirement. The gross water requirement is 902, 785 □/day, and total amount of the return flow is 348,027□/day in the irrigation area of Tao-Yuan Main Canal. The total amount of the return flow is 38.55% in proportion to that of total irrigation water. |
本系統中英文摘要資訊取自各篇刊載內容。