汉阴县2014年油菜菌核病发生特点原因及对策

Analysis of Sclerotinia sclerotiorum(Lib.) de Bary Seriously Happened in Hanyin County in 2014

油菜菌核病是汉阴县油菜生产上的主要病害,2014年汉阴县油菜菌核病具有发生面广,危害严重等特点。通过调查分析油菜盛花期阴雨偏多是造成2014年油菜菌核病大发生的主因;长期连作,菌源充足,田间管理不到位,农户疏于防治均是造成今年菌核病偏重发生的原因。农业部门加强监测预警,从选用抗耐病品种,加强田间管理,提高油菜自身抗病能力,重点加强初花期至盛花期的药剂防治工作,以减轻或控制来年菌核病的危害程度。

Sclerotinia sclerotiorum（Lib.） de Bary is a main rape disease in Hanyin County, which widely and seriously happened in 2014. Through investigation and analysis of the main causes rains during the rapeseed flowering period and the long-term continuous cropping with adequate bacteria sources and uncomfortable field management leading to farmers＇ prevention neglection resulted in the serious occurrence of Sclerotinia sclerotiorum（Lib.） de Bary in 2014. The county＇s agricultural department suggested to strengthen monitoring and early warning, and apply to prevention and treatments combined with high yield and high holding demonstrations, and so the effects was obvious. Comprehensive countermeasures were proposed to select anti-disease and disease-resistant varieties, strengthen field management, improve canola own disease resistance, focus on strengthening chemical control from the early flowering to the flowering periods, so as to reduce or control the degree of disease harms in the coming years.