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对澳大利亚西澳州桉树人工林菌根类型及其形成情况进行了调查 ,并采用生物测定法 (Bioas saymeasurement)研究了桉树林地土壤菌根菌剂的接种潜力 .根系菌根检查和生物测定法试验均表明 ,在自然条件下桉树可以和不同真菌共生而形成三种类型的菌根 ,即外生菌根、VA菌根和混合菌根 ;林分成熟程度与菌根形成有一定的相关性 ,与共生体的类型也有一定影响 .在幼林中 ,桉树根系主要与内囊霉菌共生形成VA菌根 ,而成熟林主要与担子菌共生形成外生菌根 ,混合菌根表现为一种中间类型 .在收集的林地土壤中移植的菌根诱饵植物 (三叶草和蓝桉 )分别检测出土壤中存在有一定量的VA菌根菌和外生菌根菌 ,但菌根菌繁殖体数量及接种潜力相对较小 ,并且也揭示了按树年龄对土壤菌剂的相对接种潜力影响较大 .本文对桉树人工林土壤菌剂接种潜力进行了评价 ,并就引进优良菌根菌对桉树人工林生产的重要性进行讨论
The eucalyptus plantation mycorrhizal type and its formation in Western Australia were investigated, and the bioassay (Bioas say measurement) was used to investigate the inoculation potential of soil mycorrhizal fungi in eucalyptus forest. Root mycorrhizal test and bioassay test All showed that under natural conditions, eucalyptus could coexist with different fungi to form three kinds of mycorrhizae, ectomycorrhizal fungi, VA mycorrhizae and mixed mycorrhizae. The degree of maturity of mycorrhiza was related to mycorrhizal formation, And the type of symbionts also have an impact.In young forest, Eucalyptus root symbiosis with the inner mold mainly to form VA mycorrhizal, and mature forest mainly with the Basidiomycetes to form ectomycorrhizae, mixed mycorrhiza showed an intermediate type in The mycorrhizal bait plants (clover and blue eucalyptus) transplanted in the forest soil collected detected a certain amount of VA mycorrhizal and ectomycorrhizal fungi in the soil respectively, but the number of mycorrhizal colonies and their inoculation potential were relatively small , And also revealed that the relative inoculation potential of soil microbial agents has a great influence on the tree age.This paper evaluated the potential of inoculation of soil microbial agents in Eucalyptus plantations, Fungi of the importance of eucalyptus plantation production will be discussed