中文摘要：

以分离于华北、华中和华南3个生态区及法国引进的丛枝菌根真菌为试验菌株，采用三室根箱培养的方法，研究了它们在华北、华中和华南3种典型土壤一褐土、棕壤和红壤上的菌根形成、接种效应、磷吸收贡献和根外菌物量情况。结果表明，6种菌株在上述指标上存在显著的种间或生态型差异，土壤与菌株间存在显著的交互作用。6种菌株在3种土壤上都能与玉米形成菌根，在褐土和棕壤上大多数菌株在分离地所在地区土壤类型上的菌根侵染率较高，说明其对该土壤条件的适应性较强；在红壤强酸性土壤条件抑制了菌根真菌的侵染。菌株BEG168、BEG167、BEG151、BEG221和BEG141在褐土上，BEG151和BEG221在棕壤上，BEG168和BEG150在红壤上显著提高了玉米的生物量。在褐土和棕壤上，除BEG150外，BEG168、BEG167、BEG151、BEG221和BEG141能显著促进宿主吸磷；而在红壤上，BEG168和BEG141显著促进了宿主吸磷。若以真菌的根外菌物量作为衡量AM真菌菌株土壤生态适应性的指标，BEG141和BEG167是生态适应性强的菌株，为广幅生态型菌株；菌株BEG168和BEG151次之，前者在棕壤上适应性高，后者在红壤上适应性高。BEG150和BEG221生态适应性较窄，仅适应红壤或褐土，为窄幅生态型菌株。Glomus etunicatum的两个生态型BEG168和BEG221在土壤生态适应性上差异很大，前者在两种土壤上收集到菌物量，而后者只在褐土上收集到菌物量。土壤条件可以决定丛枝菌根真菌的生长状况和功能。

英文摘要：

The mycorrhizal formation, inoculation effectiveness, extraradical fungal biomass and P uptake contribution of six arbuscular mycorrhizal isolates screened from South China, Center China and North China on typical cinnamon soil, brown soil and red soil collected in above three regions were investigated using three-compartment glass-bead culture system associated with maize. The results showed that there were significant differences among fungal species or ecotypes in all above index, which varied with soil types. First, six fungi could colonize maize root on three soils, and the fungal colonization rate was higher on soil collected in the region that had been screened for cinnamon soil and brown soil. On red soil, the fungal colonization rate was lower compared with those on the other soils for the inhibiting effects on spore germination and growth. The fungi BEG168, BEG167, BEG151, BEG221 and BEG141 on cinnamon soil, BEG151 and BEG221 on brown soil as well as BEG168 and BEG150 on red soil significantly improved maize biomass, so they had potential to be used in the area of the soil collected. The inoculation effectiveness of fungi varied with soil types, especially for BEG167. BEG167 performed positively on cinnamon soil, and neutral on brown soil, but negatively on red soil. Except for BEG150 all All other fungi, except BEG150, increased maize P uptake on cinnamon soil and brown soil, however, only BEG168 and BEG 141 improved P uptake significantly on acidic soil. BEG 141 and BEG 167 were wide range ecotypes if regarded fungal extraradical biomass as ecological adaptation index, and followed by BEG168 and BEG151, and BEG150 and BEG221 were narrow range ecotypes. Two ecotypes of Glomus etunicatum BEG168 and BEG221presented differently in edaphic adaptability, the former produced large biomass on two soils instead of one soil of the latter. That indicated that edaphic conditions could alter the growth and symbiotic status of arbuscular mycorrhizal fungi.