山西省黄芪根腐病优势病原菌的鉴定及拮抗芽孢杆菌的室内初筛

来源 :中国植物保护学会2015年学术年会 | 被引量 : 0次 | 上传用户:fdazhyy
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  黄芪根腐病是为害黄芪生产的主要土传病害,近年来在黄芪主产区普遍发生.山西省作为道地蒙古黄芪Astragalus membranaceus (Fisch.) Bge.var.mongholicus (Bge.)Hsiao的主产地之一,根腐病的发生呈逐年上升趋势.据本课题调查,一般地块发病率为10%~30%,重者达60%,3年或3年生以上植株发病更为严重.目前,山西省黄芪根腐病病原菌的分离鉴定还未见报道.同时,该病的防治依然以传统的农业防治和化学防治为主,但传统农业措施受限因素多、实施困难,化学农药又易导致农药残留、污染环境、使病原菌产生抗药性,甚至降低药材的品质,因而无法满足生产实际需要,亟待进行生物农药的研究开发.
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