福建农业学报2023，Vol.38Issue(11)：1321-1328,8.DOI:10.19303/j.issn.1008-0384.2023.11.008
山药根腐线虫病发生动态及连作土壤线虫群落结构特征
Occurrence of Root-lesion Disease on Yams and Characteristics of Nematode Community in Continuous Cropping Soil
摘要
Abstract
[Objective]Occurrence of the root-lesion disease on yams caused by nematodes on continuously cropped fields and the parasite community in soil were investigated for the disease control.[Method]Soil specimens at the continuous cropping fields cultivating early-maturing Yongfeng yam using the traditional method,late-maturing Zhugaoshu yam using the directional shallow trough method and the traditional farming in Taihe county were collected for analysis.Nematodes in the soils were isolated by Baermann funnel method,identified to genus,and counted separately based on their morphology.Variations on the nematode community during the growth of yams were observed.[Result]The population of the nematodes that caused the root-lesions on the fields grown Yongfeng yams increased significantly beginning from June,and that grown Zhugaoshu,from August.Both peaked in October.The 9,13,and 12 genera of largely bacterivorous and herbivorous nematodes were isolated from the fields of different varieties of yams grown by using different cultivation methods.In October,when the parasite abundance peaked,the population of Acrobeloides decreased significantly by 93.55%in the soil at the Yongfeng yam field,those of Rhabditis by 52.80%at the Zhugaoshu field cultivated by directional shallow trough method and by 75.99%at the field farmed by the traditional method,while that of Acrobeloides at the Zhugaoshu traditionally cultivated field by 96.01%.The ecological indexes on the nematodes varied depending upon the associated yam varieties,cultivation methods,as well as sampling time.For instance,the indexes of H',J',and WI were significantly lower in October than other times in a year.[Conclusion]October appeared to be the critical month in a year for controlling the nematodes in yam fields.A significant rise in the parasite population would disrupt the ecological balance resulting in a considerable reduction on bacterivores that ill-effects health of the farm soil.关键词
山药/根腐线虫/土壤线虫/栽培方式/连作Key words
Yam/root-lesion-causing nematode/nematodes/cultivation method/continuous cropping分类
农业科技引用本文复制引用
范琳娟,吴彩云,徐雪亮,刘子荣,姚健,康宏波,胡平华,姚英娟..山药根腐线虫病发生动态及连作土壤线虫群落结构特征[J].福建农业学报,2023,38(11):1321-1328,8.基金项目
江西省农业科研协同创新项目(JXXTCX202108、JXXTCX202310) （JXXTCX202108、JXXTCX202310）
江西省学科带头人培养计划项目(20213BCJL22045) （20213BCJL22045）
江西省农业科学院基础研究与人才培养专项(JXSNKYJCRC202206) （JXSNKYJCRC202206）
