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2010—2011年对湖南省水稻大面积生产中南方水稻黑条矮缩病发生情况进行了调查,发现该病的发生在不同年份、地区及品种间存在明显差异,发病面积和程度均为湘南>湘中>湘北。发病时间以湘南早于湘中、湘北,2010年发病重于2011年。分析其发病差异的主要原因,可能与4—9月由西南暖湿气流引起带毒白背飞虱迁入湖南省的时间迟早、机会多少及是否采取有效防治措施和品种抗病性等有关。
2010-2011 survey of large-scale rice production in southern Hunan rice black-streaked dwarf disease was investigated and found that the disease occurred in different years, there are significant differences between regions and varieties, the incidence of the area and degree are Shonan> Xiangzhong> Xiangbei. The onset time to Shonan earlier Hunan, Xiangbei, 2010 incidence heavier in 2011. The main reason for analyzing the differences may be related to the imminent, early or late entry of the Siphonor-feeding Stem-backed Siberian White Houseworms into Hunan Province from April to September by the warm and humid southwestern flow, the possibility of taking effective control measures and the disease resistance of the cultivars.