沿江棉区棉花进入花铃期、吐絮期,烂铃的发生相当普遍,其损失除棉铃腐烂无用外,还由于僵黄花增多,棉纤维强度降低,严重影响棉花的产量和品质。据近几年的调查,烂铃造成的产量损失一般达1—2成,高的达3成左右。烂铃的原因首先,铃期病害是导致烂铃的直接因素。常见铃病有炭疽病、红腐病、红粉病、黑果病等。在适温、 The cotton entering the cotton growing area along the Yangtze River was in the flower-boll stage. The boll-opening period and the rotten boll were quite common. The loss of cotton boll rot was useless due to the loss of rotten cotton bolls. The strength of the cotton fiber was also reduced due to the increase of the stiff yellow flower, which seriously affected the yield and quality of the cotton. According to the investigation in recent years, the yield loss caused by the rotten bell has generally reached 1-2% and the high reaches about 30%. The reason for the bad bell First, the bell disease is the direct cause of the bad bell. Common bell disease anthracnose, red rot, pink disease, black fruit disease. In the appropriate temperature,