【摘要】 对西北地区盐碱土主要植物的丛枝菌根真菌共生状况进行了调查与分析。结果表明,在14科29种植物中,除红砂(Reaumuria songarica Maxim.)外,其余植物均被菌根真菌侵染,侵染比例为96.55%;在过去认为不被侵染的莎草科(Cyperaceae)和藜科(Chenopodiaceae)植物中,发现寸草苔(Carex duriuscula C.A.Mey.)、筛草(Carex kobomugi Ohwi)、盐角草(Saliconia europaea L.)、碱蓬(Suaeda glauca Beg.)和盐爪爪(Kalidium foliatumMoq.)有侵染现象;所调查的乔木和草本类植物的菌根植物比例为100%,灌木植物为87.50%;丛枝菌根结构类型以A型为主,占65.52%,P型占27.59%;菌根侵染率和侵染强度与植物的种类、生活型、根系类型及土壤含水量的关系密切;菌根结构类型主要受植物种类及其根系类型的影响,与土壤含水量和植物的生活型无关。更多还原

【Abstract】 29 plant species from northwest sali-alkali soil were investigated.Results show 28 species(96.55%),including two from the Cyperaceae and three from the Chenopodiaceae,with the exception of Reaumuria songarica Maxim were infected with arbuscular mycorrhizal fungi(AMF).The AMF colonization rate in shrub was lower than that in tree and herb.Most plant species belonged to the Arum-type(65.52%),where as only 27.59% belonged to the Paris-type.The intermediate types were not found.The AMF colonization rate and the infection intensity were closely related to the life form,the root form,the family of the host plants and the soil water content.The structural type of arbuscular mycorrhizae was only affected by the family and the life form of the host plants,and had nothing to do with the water content of sali-alkali soil and life form of the host plant.更多还原