陕西豆科固氮牧草的生态学研究  

Ecological Study on the Nitrogen Fixing Forage Plants of Fabaceae Family in Shaanxi

作　　者：贺学礼[1] 赵丽莉[1] 

机构地区：[1]西北农业大学基础课部

出　　处：《中国草地》1997年第2期44-47,共4页Grassland of China

基　　金：国家自然科学基金

摘　　要：通过对陕西豆科固氮植物资源调查，共采得牧草３７属９８种。属内种间豆科牧草根瘤的形状、颜色、大小、着生部位相似，而属间植物根瘤特性差异明显。根瘤的形成和固氮活性与土壤条件和寄主特性密切相关。根据寄主生长习性、地理分布和利用状况，陕西豆科牧草根瘤菌的生态分布区可分为干旱区、草地区。genera and 98 species of forage plants were collected by investigatng the resource of nitrogen fixing palnts in Fabaceae family. The shape, color, size and growth site of root nodules is similar in various species of the same genus, the characters of root nodule is significantly different in various genera of thes family. The formation of foot nodule and activity of nitrogen fixation is related with soil conditions and host-plant characters. Ecological distribution of root nodule bacteria of forage plants in Fabaceae family in Shaanxi can be divided into arid grassland ploughland and mountain shrubland zones according to the growth habit, geodistribution and use state of the hostplant.

关 键 词：陕西 豆科牧草 根瘤菌 

分 类 号：S541[农业科学—作物学]