谷子黑穗病综合防治技术研究

Research on Integrated Control Technique of Millet Smut

对山西省主推的5个谷子品种进行了黑穗病抗性鉴定试验,测定了4种杀菌剂对黑穗病的防治效果,并研究了播期对黑穗病发生的影响。结果表明:不同谷子品种的抗性存在差异;不同药剂对黑穗病的防效存在差异;播期对未包衣谷子的发病率影响显著,对包衣谷子的发病率影响不大。有效防治谷子黑穗病,应以预防为主,综合防治:首选抗病品种,适时播种,必要时使用高效低毒药剂。这样,才能避免其为害,才能利于保护生态环境,生产绿色食品,提高粮食品质。

The resistance to smut of 5 main popularized millet varieties in Shanxi was identified,the control effects of four fungicides on millet smut were determined,and the effect of sowing date on the incidence of smut was studied.The results showed that there was difference in the resistance among 5 varieties.The difference in the control effect of four fungicides existed.There was significant difference in the effects of sowing date on the incidence of smut of seeds with chemical treatment,while there was no obvious effet on untreated seeds.Millet smut could be prevented and controlled effectively by sticking to the principle of prevention first and integrated control,selecting the resistant varieties,sowing in time,and applying the high effective and low toxic pesticides.