阿拉善荒漠区豆科植物共生固氮资源初步研究

王卫卫; 胡正海

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阿拉善荒漠区豆科植物共生固氮资源初步研究

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- 阿拉善荒漠区豆科植物共生固氮资源初步研究
- Resource of Symbiotic Nitrogen Fixation of Legumes in Alashan Desert
- 水土保持通报 2001年20卷第5期页码：30-33
- 作者机构：
  
  西北大学生命科学学院,陕西,西安,710069
- 作者简介：
- 基金信息：
  
  山东省教委项目“东平湖生态环境的调查评价及资源的可持续利用研究”(C96003)
- DOI：
  中图分类号：
- 纸质出版：2001
- 稿件说明：
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王卫卫, 胡正海. 阿拉善荒漠区豆科植物共生固氮资源初步研究[J]. 水土保持通报, 2001,20(5):30-33.

WANG Weiwei, HU Zhenghai. Resource of Symbiotic Nitrogen Fixation of Legumes in Alashan Desert[J]. Bulletin of Soiland Water Conservation, 2001, 20(5): 30-33.
王卫卫, 胡正海. 阿拉善荒漠区豆科植物共生固氮资源初步研究[J]. 水土保持通报, 2001,20(5):30-33. DOI：

WANG Weiwei, HU Zhenghai. Resource of Symbiotic Nitrogen Fixation of Legumes in Alashan Desert[J]. Bulletin of Soiland Water Conservation, 2001, 20(5): 30-33. DOI：

摘要

对阿拉善荒漠区不同生态条件下栽培与野生的20属55种豆科植物结瘤固氮状况进行了调查。新发现有15种豆科植物的结瘤状况是Allen文献中未见记载的

该区豆科植物种的结瘤率为94.8%

其根瘤形态大多数为圆形、棒状、指状

形态较为规

白色、黄色者居多。乙炔还原活力测定表明24.6%为无效根瘤

乙炔还原活力小于1μmol/(g·h)

占检测总数的45.9%

对阿拉善荒漠区固氮效率低下的原因进行了讨论

Abstract

The nodulation and nitrogen fixation of major cultivated and wild legumes dispersed over 20 genera. There were 55 species be studied in Alashan desert region. Among them

15 species have not been reported yet in Allen's "The Leguminoaes". 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

and most of them were white

yellow and brown in color. There were 77 samples of nodules be detected with the method of acetylene reduction. There were 24.6% of these nodules samples be ineffective for nitrogen fixation. Activities of nitrogen fixation in nodules varied little

all of them were low

and 45.9% of them be under 1μmol/g·h C 2H 4. The cause of low actions in Alashan desert region were discussed.

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