我国烟草行业目前正面临着加入 WTO的严峻挑战 ,烟草种业如何适应国内国际烟叶发展的需要 ,是我国一项紧迫的课题。我国目前烟草生产以引进品种为主 ,占种植面积的 80 %左右。但普遍表现叶部病害重、适应能力差 ,导致近几年我国烟草病害越来越重 ,产、质波动大。现在赤星病、花 China’s tobacco industry is now facing the harsh challenge of joining the WTO. How tobacco industry can adapt to the needs of domestic and international tobacco development is an urgent issue for our country. At present, tobacco production in our country is dominated by imported varieties, accounting for about 80% of the planting area. However, the common manifestation of leaf disease weight, poor adaptability, leading to more and more serious tobacco disease in China in recent years, production and quality fluctuations. Now brown spots, flowers