细链格孢菌Alternaria tenuis 是半知菌亚门丝孢纲丛梗孢目暗色孢科的一种真菌。该茵寄生性不强,但寄主范围很广,常发生在农作物、经济作物、果树、蔬菜及杂草上。近年来又在用材林树种及绿化树种上发现它的危害。用材林上细链格孢菌,最早发现于一些杨树杂交品种的叶部,形成大量的坏死型病斑,造成叶枯,提早落叶,分布于东北。 Alternaria tenuis Alternaria tenuis is a fungus of the genus Myceliophthoraceae, The Yin parasitic sex is not strong, but the host a wide range, often occurs in crops, cash crops, fruit trees, vegetables and weeds. In recent years, it has also found its damage on timber forest tree species and green tree species. The genus Agrocybe aegerita was first found in the leaves of some poplar hybrids and formed a large number of necrotic lesions, resulting in leaf blight, early deciduous, and distributed in the northeast.