高粱条纹病以往报道不多,我县也未见有记载。近几年来随着杂交高粱种植面积的扩大和杂交亲本的大量引进,我县才开始发生条纹病。1974年高粱条纹病曾在部分制种田流行成灾,严重病田(父本忻粱7号)发病株率达100%,旗叶受害株占30%;病株平均单穗重下降61%,千粒重下降56%;重病株不能抽穗。这是值得重视的一个高粱病害。 高粱条纹病发生部位,除旗叶叶鞘外,在叶片上也常发生。病菌由气孔、伤口侵入,在叶片上最初出现边缘清晰的深紫色病斑,病斑沿着叶脉纵向扩展,互相连合成 Sorghum stripe disease reported little in the past, my county has never been documented. In recent years, with the expansion of hybrid sorghum planting area and the large number of hybrid parents introduced, my county began to streak disease. In 1974, the stripe disease of sorghum was endemic in some farming systems. The incidence rate of serious disease (100% of paternal Xinxinliang) and flag leaf damage accounted for 30% Thousand grain weight decreased by 56%; heavy strains can not be heading. This is a sorghum disease that deserves attention. Sorghum stripe disease occurs, in addition to the flag leaf sheath, the leaves often occur. Bacteria by the stomata, wound invade, initially appeared on the edge of the clear dark purple lesions, lesions along the longitudinal extension of the veins, linked to each other into