论文部分内容阅读
用形态学分类法测土壤样品中丛枝菌根真菌的数量和种类分布特点,结果表明,丛枝菌根真菌广泛分布于四川农业土壤中,但其数量和种类较少,种群结构单一。共计分离鉴定出3个属18种丛枝菌根真菌,球囊霉属(Glomus)13种,无梗囊霉属(Acaulospora)2种,盾巨孢囊霉属(Scutellospora)3种,其中只有Gl.mosseae,Gl.cale-donium,Gl.constrictum的出现频率大于10%,是主要四川省农用土壤中的优势种。研究还发现,地域因素、土壤类型和土壤的理化性质以及人为因素对丛枝菌根真菌的数量和种类有显著影响(P<0.05)。
Morphological classification was used to determine the number and distribution of arbuscular mycorrhizal fungi in soil samples. The results showed that AM fungi were widely distributed in agricultural soils in Sichuan Province, but their numbers and species were few and the population structure was single. A total of 18 species of arbuscular mycorrhizal fungi, 13 species of Glomus, 2 species of Acaulospora and 3 species of Scutellospora were isolated and identified. Among them, The occurrence frequency of Gl.mosseae, Gl.cale-donium and Gl.constrictum is more than 10%, which is the dominant species in agricultural soils of Sichuan province. The study also found that the geographical factors, soil types and physical and chemical properties of soil and human factors on the number and species of arbuscular mycorrhizal fungi have a significant impact (P <0.05).