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.
出处
《中国草地》
CSCD
1997年第2期44-47,共4页
Grassland of China
基金
国家自然科学基金
关键词
陕西
豆科牧草
根瘤菌
Shaanxi,\ Fabaceae forage plant,\ Root nodule bacteria
