CAJ | 학술논문

为了探索衡阳市东洲岛丝瓜上根结发生严重的原因，该文从作物连作、多年田间发病情况、病原物、病原物表面及土壤优势真菌种类及其对根结线虫作用等方面进行了调查和研究.结果表明：该岛上多年大面积连续种植丝瓜，丝瓜根结发病率和发病程度均逐年增加，病原经形态学鉴定为南方根结线虫，感染根结线虫的丝瓜病根及其根际土壤中的优势真菌为同一种镰刀菌（Fusarium sp.），该菌对根结线虫的卵无寄生作用，且对孵化有一定的促进效果.本研究对分析东洲岛根结线虫病发生严重的原因提供了一定的科学依据.
위료탐색형양시동주도사과상근결발생엄중적원인，해문종작물련작、다년전간발병정황、병원물、병원물표면급토양우세진균충류급기대근결선충작용등방면진행료조사화연구.결과표명：해도상다년대면적련속충식사과，사과근결발병솔화발병정도균축년증가，병원경형태학감정위남방근결선충，감염근결선충적사과병근급기근제토양중적우세진균위동일충렴도균（Fusarium sp.），해균대근결선충적란무기생작용，차대부화유일정적촉진효과.본연구대분석동주도근결선충병발생엄중적원인제공료일정적과학의거.
In order to find out the reasons of the serious root-knot nematode disease occurred in Dongzhou Island of Hengyang city,the experiment was carried out to investigate continuous cropping,field incidence,pathogen,advantage fungi in the body of nematode and soil and its effect on the pathogen of root-knot nematodes.The results showed that the towel gourd was con-tinuous planted in large areas in the island for many years and the incidence and degree of the disease are increasing year by year.The disease pathogen was identified as Meloidogyne incognita by the morphological characteristics of perineum pattern of female adult.The advantage fungi,isolated from the soil and loofah root which infected by root knot nematode,was identified as Fusarium sp.by morphological characteristics.Then the effect of fermented liquid of the fungus was test on the root-knot nematode eggs hatching.The study showed the fungi was no significant inhibition on the hatching of nematode and no infect to the nematode eggs,but there was some promoting effect.This study provided some scientific basis to analyze the reasons for the serious occurrence of root knot nematode on the Dongzhou Island.