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研究生:黃國洲
研究生(外文):Huang, Kuo-Chou
論文名稱:由水質-土壤-作物關係評估灌溉水鹽分管理模式
論文名稱(外文):The Estimation of Salt Management Model of Irrigation Water by the Water Quality-Soil-Crop Relationship
指導教授:張文亮張文亮引用關係---
指導教授(外文):Wen-Lian Chang
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:農業工程學系研究所
學門:工程學門
學類:其他工程學類
論文種類:學術論文
論文出版年:1998
畢業學年度:86
語文別:中文
論文頁數:95
中文關鍵詞:土壤污染土壤鹽化用水管理
外文關鍵詞:soil pollutionsoil salinitywater management
相關次數:
  • 被引用被引用:2
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由於廢水不當排放進入灌溉圳渠,造成農業灌溉用水普遍遭受到污染。其中灌溉水所含
過多鹽分,將對土壤構成潛在性的鹽鹼害威脅並影響作物產量,嚴重者將造成土壤劣化而
形成不毛之地。過去對於施灌含鹽分超過750μs/cm之灌溉水所造成土壤長期鹽化之評估
,一直無法建立可估算之模式,因此本研究藉由微氣象、灌溉水量、灌溉水電導度與土壤
物理、化學諸因子建立數學模式,用以推估屏東台拓、永安灌區、高雄灣裡圳、林園灌區
及彰化番雅溝灌區土壤鹽分之長期變化情況,作為灌溉水質與水量管理之參考。研究結果
顯示,土壤鹽分濃度會隨進入土壤水量之多寡及平均灌溉水鹽分濃度而改變。在灌溉缺水
時期,土壤中之鹽分濃度會迅速增高,不利於作物之生長。若停灌期間又缺乏大量降雨補
注而使得土壤鹽分濃度增加,則在實施停灌後的第一個月份,受減少灌溉量所造成土壤電
導度的升高最為劇烈。根據田間採樣所得之資料加以佐證,結果顯示,在有足夠降雨的地
方,長年下來土壤飽和抽出液之電導度並不高,可見土壤不只受高鹽分灌溉水灌溉及作物
蒸發散因素而使得鹽分累聚,亦會因降雨而具有淋洗之作用。

Due to improper discharge of waste water, water sources for the agricultural
irrigation have been polluted. Salinity of the irrigation water will decrease
in crop yield. Furthermore, it will deteriorate the soil quality. In the past,
we have no basis in the correlation about salt concentration of irrigation wa
ter and salinity of soil. Therefore, through this research we hope to establis
h a model for the relationship among the irrigation volume, electrical conduct
ivity of irrigation water and the electrical conductivity of soil, to estimate
the difference of electrical conductivity of soil in reference to irrigation
management. And our study areas include Ping-dung Tai-tuo、Yung-an、Gang-shan
Wan-li、Kaoshiung Lin-yuan and Jang-hua Lan-ya-gou irrigation zones.From the s
tatistical result, it shows that the salt concentration of soil will change as
the salt concentration of irrigated water and its volume changed. The salt co
ncentration will rapidly increase during dry season,which also be harmful for
the crop growth. If there is not enough fall rain during resting period, the s
oil salt concentration will be increased and then the first month after restin
g period, the electrical conductivity of soil will increase to its maximum lev
el caused by decreasing irrigation water. From the data of field samples,the e
lectrical conductivity of soil is not high in such year. This means the salt w
ill accumulate because of the high salt concentration of irrigated water and c
rop evapotranspiration, and leached by rainfull. The result totally fits with
our hypothesis.

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