澳大利亚ECM菌在尾叶桉上的筛选及其接种效应

报道４３种澳大利亚及２种国产外生菌根菌株在广东尾叶桉人工林上的筛选试验的初期研究结果。分别对试验林６、１２和２４个月的生长情况进行了调查，数据分析结果表明，与未接种对照林木相比，接种试验林在树高和地径（或胸径）生长量上均表现出显著的接种优势（Ｐ〈０．０１）；接种林３次调查平均树高生长量最大增幅分别为２６．１％、３３．７％和２７．４％，地径（或胸径）最大增幅分别为１９．２％、２１．５９％和１９．３２％；２４个月时每公顷材积最大幅为５６．８％。Ｅ０７１０（Ｌａｃｃａｒｉａ）、Ｈ４６７０（Ｌａｂｙｒｉｎｔｈｏｍｙｃｅｓ）、Ｅ４５０１（Ａｍａｎｉｔａ）、Ｅ２０１３（Ｌａｃｃａｒｉａ）、Ｃ９３０１（Ｐｉｓｏｌｉｔｈｕｓ）、Ｈ１２７２（Ｓｃｌｅｒｏｄｅｒｍａ）、Ｈ１１９４（Ｔｈａｘｔｅｒｏｇａｓｔｅｒ）、Ｈ０６０３（Ｓｃｌ

Screening and Inoculant Efficacy of Australian Ectomycorrhizal Fungi on Eucalyptus urophylla in Field

A large field trial of Eucalyptus urophylla inoculated with 43 Australian ectomycorrhizal fungal isolates and 2 indigenous isolates was established at Gaoyao,Guangdong Province to ascertain their compatibility and inoculum efficacy on host growths.Measurements for tree growth were carried out at 6 and 12 months respectively after the establishing of the plantations.There was significantly difference on the increment of both height and diameter breast high between inoculated treatments and blank controls (P<0.01).The increase of heights was up to 27.4% at 24 months after transplanting,and 19.3% for basal diameter.The results demonstrated that all fungal isolates could greatly enhanced the growths of E.urophylla at early stage of this research.Fungal isolates E0710 (Laccaria),H4670 (Labyrinthomyces), E4501 (Amanita),E2013 (Laccaria),C9301 (Pisolithus),H1272 (Scleroderma),H1194 (Thaxterogaster),H0603 (Scleroderma),H4011(Labyrinthomyces),H1235(Protubera) were proved to be more efficient for E.urophylla than others,and have great potential for commercial inoculation programs in southern China.The variety of effects of two inoculum types (either spore suspension or cultured mycelium) was also discussed.More attention will be put on the persistence of introduced fungal isolates in field.