合理化施肥對土壤及地下水管理之影響
Other Title
Effect of rational use of fertilizer on the management of soil and groundwater
Journal
土壤肥料管理對生態環境與農業生產力之影響研討會論文集
Pages
25-44
Date Issued
2011-05
Author(s)
陳琦玲
廖崇億
郭鴻裕
Chi-Ling Chen
Chong-Yi Liao
Horng-Yuh Guo
Abstract
農民在追求增產與降低總成本的考量下，常過量施用肥料；未能被植物吸收之營養鹽可能影響土壤、地表水及地下表的品質，特別是氮素，不僅污染水體，亦是溫室氣體之來源。農田的氮素循環機制甚為複雜，為達到合理化施肥之目的，需瞭解氮素在農地之轉化與移動。本研究以兩處四種等級肥料量之玉米栽培試驗，探討不同肥料形態之氮肥利用效率，及不同管理方式對肥效的影響；另以非破換性滲漏計試驗，探討玉米田氮素在台灣八種代表性土壤的淋洗量及其他造成環境衝擊之途徑與比例。
Farmers in the pursuit of yield and lower total cost considerations, excessive fertilization often practiced. The surplus nutrient, especially nitrogen not absorbed by plants may affect the soil, surface water and groundwater quality. As nitrogen cycling in farmlands is a complex mechanism, in order to realize rational use of fertilizer, better understanding the transformation and leaching of nitrogen is in need.
Subjects
合理化施肥
氮淋洗
硝酸態氮
rational use of fertilizer
nitrogen leaching
nitrate
Publisher
國立臺灣大學農業化學系
Type
conference paper