玉米粗缩病过去为北方地区的主要病虫害之一。多年来未见南方有粗缩病的报导。自１９８７年在兴山县南阳镇首次发现后，逐年加重。１９９８年湘坪乡文武村、落步河村春玉米发病面积５０％以上，较轻的发病株率２０％左右，严重的田块达８０％以上，不少农户进行毁种，改种... Corn pasture is one of the major pests and diseases in the north. Over the years, no reports of tuberculosis in the South have been reported. Since 1987 first discovered in Nanyang Town, Xingshan County, it has been increasing year by year. In 1998 Xiangping Township Wenwu Village, Lubuhecun spring corn incidence area of ​​more than 50%, the lesser incidence of about 20% of the plant, the serious field of more than 80%, many farmers to deforestation, replanting ...