论文部分内容阅读
2008年5月份,在连云港市赣榆县的700hm2露地番茄种植区,1种新型病毒病造成40%的番茄减产。10月份该病毒扩展到该市东海县和邻近的省属岗埠农场设施番茄基地,为害面积达3000hm2,有近30%的温室绝收,平均减产50%,并有继续向北、向内陆发展为害的趋势。经鉴定,该病为番茄黄化曲叶病毒病[Tomato yellow leaf curl virus(TYLCV)][1]。从20世纪90年代该病始见报道,近5年来猖獗发生。为此,笔者对该病的发生流行规律进行总结,并提出综合防治措施。1症状及病原初期主要表现生长迟缓或停滞,植株明显矮化,节间变短,叶片变小、变厚,叶质脆硬,叶片有凹凸不平的皱缩或变形,向上卷曲,叶片边缘至叶脉区域黄化。以植株上部叶片症状典型,下部老叶症状不明显。后期表现叶脉变紫色,叶片变形,焦枯,新叶出现黄绿不均斑块,开花后结果困
In May 2008, a new virus disease caused a 40% reduction in tomato production in a 700hm2 open-field tomato plantation in Ganyu County, Lianyungang. In October, the virus extended to the city of Donghai County and its neighboring provincial port farm facilities tomato base damage area of 3000hm2, nearly 30% of the greenhouse crops, with an average reduction of 50%, and continue to move north, inland development Harmful trend. It has been identified as Tomato yellow leaf curl virus (TYLCV) [1]. Beginning with reports of the disease from the 1990s, it has been rampant in the past five years. To this end, the author summarizes the prevalence of the disease and put forward comprehensive prevention and control measures. 1 Symptoms and pathogen initial growth retardation or stagnation, significantly dwarf plants, internodes shorter, smaller leaves, thickening, leafy crisp leaves with irregular shrinkage or deformation, up curly, leaf edge to Veins yellow area. The upper leaves of the typical symptoms of the lower part of the old leaves symptoms are not obvious. The late manifestations of veins purple, leaf deformation, scorching, yellowish green uneven patch of fresh leaves, flowering after the results sleepy