种子传染病中,病原体侵入种子内部的虽然很少,但对这些病原体进行药剂消毒没有效果,故多用热处理进行种子消毒。热处理消毒有温汤浸种和干燥种子干热处理二种方法。在温汤浸种时,为了不损伤种子,温度控制在50～55℃范围内。因此,对烟草花叶病毒病这样耐热性高的病原体无效。而在干热处理中,利用有的作物种子较耐 In the case of seed infectious diseases, pathogens invade the seeds, although they are rarely contained, there is no effect on the disinfection of these pathogens. Therefore, the seed is mostly sterilized by heat treatment. Heat treatment disinfection with warm soup soaking seeds and dried seeds dry heat treatment of two methods. In the warm soaking seeds, in order not to damage the seeds, the temperature control in the range of 50 ~ 55 ℃. Therefore, the tobacco mosaic virus disease such heat-resistant pathogens ineffective. In dry heat treatment, the use of some crops more resistant to the seeds