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作 者 ：郭秀珍;谭菲

期 刊 ：云南植物研究 1981年 3卷 03期 页码：1-3

关键词：松树；菌根；真菌；猝倒病；

Keywords:protective, effect, several, mycorrhizal, boletus,

摘 要 ：从油松根部分离到的外生茵根真菌：牛肝菌之一种（Boletus sp.）和厚环粘盖牛肝菌（Suillus grevillei）除对油松（Pinus tabulaeformis）幼苗猝倒病有防治作用外，还能促进幼苗生长，其显著性水平P＝0.01。引起油松幼苗猝倒病的病原菌主要是立枯丝核茵（Rhizoctonia solani）和尖孢镰刀茵（Fusarium oxysporum）。在盆栽接种试验中，用牛肝菌和厚环粘盖牛肝菌接种，油松幼苗发病率比对照降低21.0—36%；在田间接种试验中。松苗发病率比对照降低16.3-25.8％。用扫描电镜对接了种的油松幼苗进行观察，发现在油松营养根表面形成密集的菌丝套，而根尖则没有。用石腊切片观察到围绕在首根皮层细胞周围的哈蒂氏网。采用500毫升的广口瓶，盛人草炭150克、细砂50克、玉米粉9克、红糖1克、麦芽汁（1.03波美）300毫升的配方，接种牛肝菌菌丝体，置30℃, 10天左右产生出蘑菇子实体。

Abstract:The damping-off disease is one of the most important diseases of pine seedlings in nurseries. By using some chemical fungicides we have effectively controlled this disease, but the soil pollution problem must still be considered. We have found out several ectomycorrhizae, such as Suillus grevillei (Kl.) Sing. and Boletus sp., that may not only promote the growth of pine seed- lings but also protect them from infection of dampinq-off discase.

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