摘要
根据形态和解剖特征,将中原地区的毛白杨外生菌根划分成14种类型,它们与宿主的共生关系大多差或极差。菌根分布特征指标统计结果表明,毛白杨(Populus tomentoso)林地土壤中,普遍缺乏能与毛白杨形成良好共生关系的外生菌根真菌,共生关系良好的菌根主要分布在pH值小于7.5的土壤中;共生关系差或极差的菌根和假菌根则在强碱性土壤中占优势,土壤pH大于7.5的育苗地中,毛白杨幼苗形成的菌根比较单一,以假菌根-5号类型为主。树木年龄对毛白杨林的菌根形成没有影响。
According to the morphological and anatomical characteristics, the sampledmycorrhiza of Populus tomentosa from the central China are divided into 14types. Their anatomical characteristics indicate that most of them have a bador worse symbiotic relationship with the host plant. Statistical results from distri-bution characteristics index of the mycorrhiza show that the beneficial ectomy-corrhizal fungi exist rarely in the forest soil of Populus tomentosa. The majo-rity of them occur in the soils whose pH value are less than 7.5.On the con-trary the mycorrhiza with the bad or worse symbiotical relation or pseudom-ycorrhiza are dominant in the alkaline soils. In the alkaline nursery soils, onlya few of the ectomycorrhizal types have been discovered in roots of the nur-sery stock and the pseudomycorrhiza, type 5, makes up the majority of them.The tree ages seem to have no effect on the mycorrhiza formation in Populustomentosa plantation.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1993年第1期12-18,共7页
Scientia Silvae Sinicae
基金
国家自然科学基金
关键词
毛白杨
外生菌根
类型
共生关系
Populus tomentosa
Ectomycorrhizal type
Distribution characteristics index
Symbiotic relationship