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題 名 | 西北阿拉善荒漠區豆科--根瘤菌固氮特性調查與分析=Study on Resource of Symbiotic Nitrogen Fixation of Legumes in Alashan Desert |
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作 者 | 王衛衛; 胡正海; | 書刊名 | 科學農業 |
卷 期 | 50:11/12 民91.12 |
頁 次 | 頁427-432 |
分類號 | 434.2 |
關鍵詞 | 豆科植物; 根瘤; 共生固氮; 阿拉善荒漠; Legumes; root nodule; Symbiotic nitrogen fixation; Alashan desert; |
語 文 | 中文(Chinese) |
中文摘要 | 對西北阿拉善荒漠區不同生態條件下栽培與野生的20屬55種豆科植物結瘤固氮狀況進行調查。新發現有15種豆科植物的結瘤狀況是Allen文獻中沒有記載的,該區豆科植物種的結瘤率為94.8%,其根瘤形態大多數為圓形、棒形、指狀,形態較為規則,白色、黃色者居多。乙炔還原活力測定表明24.6%為無效根瘤,乙炔還原活力小於1μmol C2H4/g-h占檢測總數的45.9%,對阿拉善荒漠區固氮效率低下的原因進行了討論。 |
英文摘要 | The nodulation and nitrogen fixation of major cultivated and wild legumes dispersed over 20 genera, 55 species have been studied in Alashan desert region, among of them 15 species have not been reported yet in Allen's "The Leguminosae". The results showed that 94.8% Leguminous plants can nodulate in natural environment. The shapes of nodules of these plants were circular, ellipse or cudgel, most of them were white, yellow and brown in color. 77 samples of nodules were detected with the method of acetylene reduction. 24.6% of these nodules samples were ineffective for nitrogen fixation. Activities of nitrogen fixation in nodules varied little, all of them were low. 45.9% of them are under 1 μmol C2H4/g-h. The cause of low actions in Alashan desert region were discussed. |
本系統中英文摘要資訊取自各篇刊載內容。