摘要
大气CO2浓度增加明显促进植物根系与固氮细菌及菌根真菌的共生。CO2浓度增加条件下，根系结瘤量增多，平均瘤重增加，单株固氮活性提高．但固氮比活性的变化在不同物种和不同生长阶段的表现不一致。CO2浓度增加同时还提高菌根在植物根系的侵染率。
Elevated atmospheric CO2: Significantly stimualted the Symbiotic Combination of plant roots and nitrogen-fixing bacteria and mycorrhizal fungi. As a result,the CO2 induces the increase of nodules in per plant and of nodules average weight xand of total nitrogen-fixing activity(TNA)while specific nitrosen-fixing activity (SNA) takes different forms in different species and at different growing period ln the meanwhile,the mycorrhizal colonization in plant roots is increased consequently
出处
《湖北民族学院学报（自然科学版）》
CAS
1997年第3期6-9,共4页
Journal of Hubei Minzu University(Natural Science Edition)
基金
国家自然科学重大基金
关键词
根瘤
单株固氮活性
固氮比活性
菌根侵染
二氧化碳浓度
共生固氮能力
elevated CO_2, nodule,total N- fixing activity,specific N- fixing activity,mycorrhiza,mycorrhizal colonization
