防治苹果果实轮纹病和炭疽病的调查报告为害苹果果实的轮纹病和炭疽病，是仅次于苹果腐烂病的重要病害。许多果园由于用药种类不当，使用浓度和喷药时期欠佳，或喷药次数偏少，常造成重大经济损失。为了总结经验，使之在生产中加以推广应用，１９９３年我们对本市七个果园... Prevention and control of apple fruit ring rot and anthracnose investigation report Apple apple ring disease and anthracnose, is second only to apple rot disease important disease. Many orchards due to improper use of drugs, the use of poor concentration and spraying period, or less frequent spraying, often resulting in major economic losses. In order to summarize the experience, make it to promote the application in production, in 1993 we seven orchards in the city ...