We found that coating potato with 20 % Virus Agent A can increase the yield and reduce disease rate significantly, but the rate of seeding and the rate of commercial potato can, t increase respectively. 通过研究发现,20%病毒A可湿性粉剂包衣马铃薯对于提高马铃薯的产量,降低发病率,有着极显著的效果。而对马铃薯的出苗率和商品薯率的提高没有效果。