避雨栽培模式下广西主栽鲜食葡萄品种霜霉病发生情况调查

Field investigation of downy mildew(plasmapara viticola) of the main grape cultivars with rain shelter cultivation in Guangxi

为了掌握南方高温高湿环境避雨栽培模式下,广西鲜食葡萄主产区霜霉病发病情况,2013年8月笔者对广西兴安、资源和全州县主栽的14个葡萄品种,进行了一次田间病害发生情况调查,记录叶片病级,并计算病情指数。结果表明,这些品种发病轻、病情指数低,均适宜在避雨栽培模式下推广种植;其中巨玫瑰、大粒红无核和温克病情指数分别为0、0.63%、1.14%(或0),表现较好,应加大推广种植力度。

Under the environment of high humidity and high temperature in Guangxi, grape with rain shelter cultivation to avoid the occurrence of the disease. In order to understand the incidence of downy mildew disease of main grape cultivars, leaf disease grade of 14 grape varieties cultivated in Xing＇an, Zi＇yuan and Quan＇zhou county of Guangxi were investigated and disease index were calculated. The results showed that all of the grape varieties were with low morbidity and disease index suitable for promotion in Guangxi; disease index of Giant rose, Blush seedless and Winker was 0, 0.63%, 1.14% （or 0） , respectively, performance good resistant to downy mildew, should increase the promotion of planting; the same varieties in Xing＇an and Quan＇zhou county were performance lower disease index, Xing＇an and Quan＇zhou county is more suitable for the development of grape planting industry than Zi＇yuan county.