在云南河口３块香蕉园内发现６种重要的植物寄生线虫，它们是南方根结线虫（Ｍｅｌｏｉｄｏｇｙｎｅｉｎｃｏｇｎｉｔａ）、螺旋线虫（Ｈｅｌｉｃｏｔｙｌｅｎｃｈｕｓｓｐｐ．）、纽带线虫（Ｈｏｐｌｏｌａｉｍｕｓｓｐｐ．）、矮化线虫（Ｔｙｌｅｎｃｈｏｒｈｙｎｃｈｕｓｓｐｐ．）、半轮线虫（Ｈｅｍｉｃｒｉｃｏｎｅｍｏｉｄｅｓｓｐｐ．）和毛刺线虫（Ｔｒｉｃｈｏｄｏｒｕｓｓｐｐ．）根结线虫、纽带线虫、矮化线虫分布较广；南方根结线虫为优势种群，它在一年生香蕉园内占根际线虫总数的６３．８８％，二年生内占７５．１６％，多年生内占５２．１５％南方根结线虫的种群动态在不同蕉园各有其波动规律，其种群数量变化与月均温和月降雨量密切相关 Six important plant parasitic nematodes were found in three banana orchards in the estuary of Yunnan Province. They are Meloidogyneincognita, Helicotylenchusspp., Hoplolaimusspp., Tylenchor chynchusspp .), Hemicriconemoidesspp. And Trichodorusspp.  root-knot nematodes, nematodes and dwarfing nematodes are widely distributed; root-knot nematode is the dominant species in the annual banana plantation accounting for rhizosphere nematode The total number of 63.88%, biennial accounted for 75.16%, perennial accounted for 52.15%  South root-knot nematode population dynamics in different banana have their own fluctuations, the population changes with monthly average monthly rainfall Closely related