頁籤選單縮合
題名 | 不犁田栽培對玉米田溫室氣體排放影響之研究=Effects of No-till Cultivation on Greenhouse Gases Emission from Corn Fields |
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作 者 | 黃俊騰; 陳守泓; 范鈞翔; 姚銘輝; 申雍; | 書刊名 | 作物、環境與生物資訊 |
卷期 | 8:1 2011.03[民100.03] |
頁次 | 頁1-14 |
分類號 | 434.147 |
關鍵詞 | 全球暖化; 溫室氣體減量; 保育耕犁; 玉米; Global warming; Greenhouse gas emission reduction; Conservation tillage; Corn; |
語文 | 中文(Chinese) |
中文摘要 | 摘要 為評估是否可藉由以不犁田方式栽培玉 米,協助減少國家溫室氣體的排放量,本研 究利用一個可以模擬玉米田生態系中碳和氮 之動態變化的電腦模式,進行耕犁措施和氮 肥用量處理對玉米田溫室氣體排放影響的模 擬研究。研究結果指出,若以每作氮肥用量 140 kg N ha-1 的不犁田栽培方式種植玉米, 將比以現行栽培方式種植水稻,可大幅降低 溫室氣體的淨排放量達10~30 MgCO2 eq. ha-1 y-1。若能推動20 萬公頃休耕稻田改以不 犁田方式栽培玉米,將能減少國家溫室氣體 排放量達2~6 Tg CO2 eq. y-1。為鼓勵農民將 休耕稻田改作玉米,需克服國內生產成本高 於進口成本的問題,以符合WTO 綠色措施 之規範給予適當補貼,以及利用玉米藁稈產 製纖維素酒精以增加農民的收益,都是值得 考慮的作法。 |
英文摘要 | ABSTRACT Simulation studies were conducted, using a computer model which considered the dynamic changes of C and N in agro-ecosystems, to evaluate the potential of decreasing national greenhouse gases (GHGs) emissions through no-till cultivation of corn. Results indicated that the net GHGs emission could be reduced by 10~30 MgCO2 eq. ha-1 y-1, as compared to that from paddy rice, if nitrogen fertilizer was applied at the rate of 140 kg N ha-1 per crop season. National GHGs emission can be reduced by 2~6 Tg CO2 eq. y-1 if the practices are applied to the 200,000 hectarages of currently set-aside paddy fields. However, the barrier of high domestic production cost as compared to that of importation must be overcome first. Subsidization in accordance with World Trade Organization (WTO) green-box regulation and production of cellulose ethanol using corn stalks are measures that worth further exploration. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。