云南香蕉根际线虫种群动态的研究

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（Ｍｅｌｏｉｄｏｇｙｎｅ ｉｎｃｏｇｎｉｔａ），螺旋线虫（Ｈｅｌｉｃｏｔｙｌｅｎｃｈｕｓ ｓｐｐ．），纽带线虫（Ｈｏｐｌｏｌａｉｍｕｓ ｓｐｐ．），矮化线虫９Ｔｙｌｅｎｃｈｏｒｈｙｎｃｈｕｓ ｓｐｐ．），半轮线虫（Ｈｅｍｉｃｒｉｃｏｎｅｍｏｉｄｅｓ ｓｐ．）和毛刺线虫（Ｔｒｉｃｈｏｄｏｒｕｓ ｓｐｐ．）．根结线虫，纽带线虫，矮化线

STUDY ON THE POPULATIONS OF RHIZOSPHERE NEMATODES OF BANANA IN YUNNAN

Six important genera of plant parasitic nematodes were found in three banana plantation Yunnan Province.They are Meloidogyne incognita , Helicotylenchus, Tylenchorhynchus, Hoplolaimus, Trichodorus and Hemicriconemoides. The genera Meloidogyne, Hoplolaimus and Tylenchorhynchus were found widely distributed in three plantations. M.incognita was a predominant species and present in the highest population density, occupying 63.88% of the total population in annual banana plantation, 75.16% in biennial banana plantation, and 52.15% in perennial banana plantation. Further studies indicated that M.incognita had distinctly seasonal fluctuation. It suggested that the population fluctuation was closely correlated with the average month temperature and rainfall.