农田生态系统中VA菌根形成和功能的研究进展

RESEARCH ADVANCES ON FORMATION AND FUNCTION OFVA MYCORRHIZAE IN FIELD ECOSYSTEM

本文综述了近年来农田土壤中ＶＡ菌根形成和功能的研究，提出了今后应加强研究和解决的问题。主要包括：①生物化学、免疫学、遗传学等新方法和技术的应用，有助于ＶＡ菌粮真菌的鉴定；②农业实践活动是影响ＶＡ菌根形成和导致真菌变异的一个主要原因；③ＶＡ菌根真菌形成的菌丝网络系统加强了土壤结构的稳定性；④ＶＡ菌根真菌外生菌丝形成地下根间菌丝桥，对养分的循环和生态系统中植物的群落效应具有重要意义；⑤烟熏、杀菌剂、重新接种等技术的引入为ＶＡ菌根接种剂的大田应用提供了可行的途径。

This Paper reviewed the research results of VA mycorrhizal formation andfunction in field soil in recent years and gave the problems researching and solving tostrengthen in the future.The research results include:1)the application of new methodsand techniques(such as biochemical,immunological and genetic characters)strong helpsforward the identification of VA mycorrhizal fungi;2)the practical activities of agriculturemycorrhizal inoculator in the fields.