通过室内对水稻不同品种、不同生育期接种带毒灰稻虱成虫 ,观察其传毒发病过程和调查田间自然发病结果表明 ,水稻黑条矮缩病在早、晚稻不同品种上的抗性表现和在不同生育期的感染敏感性有差异。分析了秧苗期与本田期的侵染机率 ,提出了秧苗期是水稻黑条矮缩病治虫防病的关键时期 Through indoor indoors, we inoculated adult larvae with different poisoning stages to different stages of rice. Observe the course of their transmission and investigate the natural disease in field. The results showed that the resistance of rice black-streaked dwarf disease to different varieties of early and late rice and In different growth stages of infection sensitivity differences. The probability of infection in the seedling stage and the Honda period was analyzed, and the seedling stage was the key period for the prevention and control of rice black-streaked dwarf disease