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红松根朽病的症状是初期冠希、色淡、针叶变细,后期全冠枯黄、干基肿大、流脂、溃烂,形成层有白色扇形菌膜,根部内外有大量菌素。树木严重受害时木质部边材呈海绵状腐朽。在伐根、枯死木及重病衰弱木上,8～10月可产生子实体。病害的发生阳坡重于阴坡,山中、下腹重于上腹。低凹潮湿的林地病重。由病根分离培养获得病原菌,其菌落、菌索在麦芽培养基上生长良好,后期在三角瓶内产生典型子实体,在木屑麦麸脲素培养基上产生大量子实体。子实体蜜黄色、丛生、具菌环,菌盖上有褐色鳞片,孢子印黄白色,菌褶贴生、延生,孢子6.5～9.6×4.3～6.8微米,经鉴定为蜜环菌[Armilla-riella mellea(Vahl.ex Fr.)Karst.]子实体上产生的担孢子侵染伐根和带伤的衰弱木,菌索在地下伸延侵染健康植株。药剂防治试验,多菌灵抑菌效果较好,多菌灵加腐植酸铵、熟石灰、代森锌、托布津、熟石灰加硫黄粉也有一定效果。
Red pine root rot disease symptoms are the initial crown Greek, pale, needle thinner, late full crown brown, dry base enlargement, flow fat, ulceration, the formation of layers of white fan-shaped film, there are a large number of root and root bacterium. When the tree is seriously damaged, the woody sapwood is spongy. In the stump, dead wood and severely ill on the weak wood, 8 to October can produce fruiting bodies. The incidence of disease is heavier than the shady slopes, mountains, lower abdomen heavier on the abdomen. Low wet woodland sick. Pathogenic bacteria were isolated and cultivated from diseased roots. The colonies and hyphae grew well on the malt medium, and the typical fruiting bodies were produced in the flask at the later stage, and a large number of fruiting bodies were produced on the medium of sawdust gluten urea. Fruiting bodies of honey yellow, tufted, bacteria ring, cover with brown scales, spores yellowish white, follicular afforestation, extension, spores 6.5 ~ 9.6 × 4.3 ~ 6.8 microns, was identified as Armillaria rhamnoides [Armilla-riella The basidiospores produced on the fruiting bodies of the mellea (Vahl.ex Fr.) Karst. infest the diseased and diseased diseased woods, and the strain of fungi extends underground to infect healthy plants. Pharmacological control test, carbendazim antibacterial effect is better, carbendazim plus humic ammonium, hydrated lime, deuterin, thiophanate, hydrated lime also have some effect.