大豆花叶病毒(SMV)是普遍发生的种传病害,种子带毒,种传中心病株的出现是此病的初次侵染源,对病害在田间的蔓延起决定作用。因此,繁殖无(低)病毒种子,是大豆优质、高产的一个重要途径。现将有关繁殖技术介绍如下: 1.建立繁种隔离田充分利用地理优势,利用树林、山丘等自然屏障及玉米制种田隔离,隔离距离为100米以上。要求周围无大豆或野 Soybean mosaic virus (SMV) is a common disease caused by seed-borne, seed poisoning. The appearance of diseased center is the primary source of infection and plays a decisive role in the spread of disease in the field. Therefore, the breeding of (low) virus seeds, soybean is an important way of high quality, high yield. Breeding techniques are now introduced as follows: 1. To establish a variety of isolated fields make full use of geographical advantages, the use of woods, hills and other natural barriers and corn farming isolation, isolation distance of 100 meters. No soy or wild around is required