摘要
为了明确土生空团菌环境适应机理,以内蒙古地带性植被为研究对象,调查和测定了不同森林类型区土生空团菌自然侵染率、植被类型、土壤养分含量变化,探讨土生空团菌自然侵染率与植被、土壤因子的关系。结果表明,从植被类型来看,大兴安岭兴安落叶松、黑里河油松、大青山虎榛子、乌拉山白桦、贺兰山青海云杉等宿主植物土生空团菌自然侵染率均为30%以上,不同森林类型区油松土生空团菌自然侵染率也存在一定的差异。从根际土壤因子分析,土生空团菌自然侵染率与根际土壤有机质(r=0.492)、全氮(r=0.479)呈明显正相关(P<0.05),与根际土壤速效磷(r=0.575)呈极显著正相关(P<0.01)。
In order to clarify environmental adaptation mechanism of Cenococcum geophilum,the zonal vegetation in Inner Mongolia was used as sample,Cenococcum geophilum＇s natural infection rate of the areas of different forest types,vegetation types,contents change of soil nutrient were investigated and determined.The relationships between the natural infection rate,vegetation,and soil factors were discussed.The result showed that natural infection rate of Cenococcum geophilum infected in Larix gmelinii in Daxing＇anling,Pinus tabulaeformis in Black River,Ostryops＇s davidiana in Daqing Mountain,Betula platyphylla in Ural Mountain,Picea crassifolia in Helan Mountain were more than 30%.Natural infection rate of Cenococcum geophilum had some differences between Pinus tabulaeformis in different forest areas.The natural infection rate of Cenococcum geophilum had a significant positive correlation with rhizosphere soil organic matter,total nitrogen,and had a very significant positive correlation with available P.
出处
《中国农学通报》
CSCD
2012年第25期47-51,共5页
Chinese Agricultural Science Bulletin
基金
内蒙古高等学校科学研究项目"内蒙古地区土生空团菌生态分布及其对提高宿主植物抗旱机理研究"(NJ10205)
国家自然科学基金"土生空团菌核糖体18S
28SDNA中I型内含子的分析"(31060112)
内蒙古自然科学基金重大项目"内蒙古中西部菌根真菌多样性及其在生态植被重建中作用机理的重大基础研究"(200607010501)
关键词
土生空团菌
自然侵染率
植被
土壤因子
Cenococcum geophilum
natural infection rate
vegetation
soil factors
