刺槐接种VA菌根真菌与环境条件的关系  

Relationship between Robinis pseudoacacia inoculated with vesicular-arbuscular mycorrhizal fungus and environmental condition.

作　　者：苏凤岩[1] 徐卿德[1] 李维光[1] 雷启迪[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110015

出　　处：《应用生态学报》1992年第4期389-391,共3页Chinese Journal of Applied Ecology

基　　金：国家"七五"攻关项目

摘　　要：1 引言 国内外众多的试验表明,VA菌根真菌侵染植物根系后,促进植物对养分吸收和物质转化,从而大幅度增加寄主生物量,但也有试验表明,接种VAMF后,寄主生物量并无明显增加,这可能与菌根接种物本身的特点及外界条件有关,其中土壤中磷的含量是重要因素之一。据报道,土壤P过高,对菌根的形成有影响。本文就刺槐接种VAMF,在不同立地环境下寄主生长变化及不同施磷量对VAMF侵染能力、孢子产生量、植株生物量等进行了研究。After inoculated with vesicular-arbuscular mycorrhizal fungus(VAMF),the growth of R. pseudoacacia,its infection ability and spore number are varied with soil condition and phosphorus application rate. In a pot experiment applicated with P, the host plant biomass and infection rate are higher when the total P content in soil is 0.073％, but decreased markedly,when the P content is up to 0.08％. More spores are found at 4—6cm depth of rhizosphere soil when the soil total P content is 0.076％. In an inoculated drab soil, the infection rate of seedlings at 3 months old is 65.8%, but their biomass is not significantly increased. After forestation with inoculated seedlings on an infertile hilly land, the biomass of host plant at 5 months old is increased by 17.6%.

关 键 词：刺槐 VA菌根真菌 环境效应 接种 

分 类 号：S792.260.2[农业科学—林木遗传育种]