菌根是土壤中一类真菌与植物根系共生所形成的菌与根联合的复合吸收器官。中国林业科学研究院林业研究所花晓梅研究员领导的课题组,在国家自然科学基金的资助下,对林木菌根的研究作出了优异成绩。课题组历经五年,在全国范围内调查和收集对植物有效的菌类,共采集了277种,分离和收集258种(株)。经上千次实验,从中筛选出9种广谱性优良菌根真菌。在种间筛选的基础上,又进行了种内不同生态型优良菌株的筛选,共筛选出优良菌株15个。研究证明,菌根对植物成活、生长和发育具有多方面的有益作用:(1)它的大量菌丝从植物的根部细胞内或细胞间向外伸展,在土壤中扩展蔓延,起着比根毛更有效的吸收作用,不但扩大了根 Mycorrhizal is a composite absorption organ combined with bacteria formed by the symbiosis of a type of fungi and plant roots in soil. The research group headed by researcher Hua Xiaomei of the Forestry Research Institute of the Chinese Academy of Forestry has made outstanding achievements in the research of forest mycorrhiza with the support of the National Natural Science Foundation. After five years, the research team investigated and collected all kinds of fungi that are effective for plants in China. A total of 277 species were collected and 258 species (strains) were collected and collected. After thousands of experiments, nine kinds of broad-spectrum good mycorrhizal fungi were screened out. On the basis of interspecific screening, screening of excellent strains of different ecotypes within the species was carried out, and 15 strains of excellent strains were screened out. Studies have shown that mycorrhizal plants have many beneficial effects on the survival, growth and development of plants: (1) a large number of its mycelium extends from the roots of cells or cells in the cells and spreads in the soil, More effective absorption, not only expanded the root