大庆地区紫花苜蓿主要病害调查

Investigation on Main Disease of Medicago sativa L.in Daqing Area

对大庆地区主要紫花苜蓿种植基地病害发生情况进行了初步调查。此次调查共发现紫花苜蓿茎部和叶部病害12种,在生产中大面积发生且危害较重的主要病害有4种,分别为褐斑病、霜霉病、炭疽病、斑枯病和小光壳叶斑病,应立刻采取防控措施。苜蓿花叶病、锈病和轮纹病等病害危害虽较轻,但流行的潜在危险较大,也应及早预防。大庆胡吉吐莫、勇敢村地区的紫花苜蓿染病情况较为严重,林甸、银浪、星火牧场、肇源县等种植基地发病较轻。

Preliminary investigation on alfalfa diseases was conducted in major Medicago sativa L.planting bases of Daqing prefecture. A total of 12 kinds of common diseases were found in this investigation.There were 4 kinds of diseases that had occurred in a large area of Medicago sativa L.production with serious injuries.They were common leaf spot, downy mildew, anthracnose, septoria leaf spot and leptosphaerulina leaf spot,respectively.So the control measures should be taken to stop their spread.Medicago sativa L.mosaic, rust,and fusarium root rot disease had also occurred.Although the symptom was lighter,it was quite danger to epidemic.So it was better to take preventative measures early.The incidence was more serious in Hujitumo,Yonggancun than that in Lindian,Yinlang, Xinghuo, Zhaoyuan areas.