我省目前主栽苹果品种是红富士,约占苹果总产量的60%以上。该品种存在的主要问题是极易感染轮纹病。正常年份烂果率在30%,严重年份烂果率达50%以上。轮纹病菌[Botryosphacria berengeriana de Not.f.sp.piricola(Nose)Ko-ganezawa et Sukuma]以苹果落花后开始浸染幼果,6～7月间侵染最盛。幼果期遭受侵染的果实到近成熟期开始发病,在果收 At present, our province is mainly cultivated apple varieties Fuji, accounting for more than 60% of the total output of apples. The main problem of the variety is susceptible to rotifers. In normal years rotten fruit rate is 30%, severe rotten fruit rate of 50% or more. Botryosphacria berengeriana de Not.f. sp.piricola (Nose) Ko-ganezawa et Sukuma began to dip young fruit after falling apples, with the highest infection rate from June to July. Fruit infected young fruit period to the onset of the onset of maturity, the fruit harvest