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甘蔗赤枯病在我区不少地区均有发生,特别在石灰岩地区比较常见,不同程度地影响甘蔗的产量。为了预防甘蔗赤枯病的危害,提高甘蔗产量,几年来我们开展了甘蔗赤枯病发病原因及其诊断方法的调查研究。现将在来宾县及廖平农场所作的调查研究结果报告如下。一、主要症状甘蔗幼苗期尚毹正常生长,但至分蘖期生长减缓,逐渐出现赤枯病。病株分蘖少,茎秆细,节间短,叶片窄。起初老叶尖端变黄,出现赤褐色斑点,并向基部扩展,之后叶尖干枯,逐渐向基部延伸,至整个叶片干
Sugarcane wilt in many areas of our region have occurred, especially in the limestone areas are more common, to varying degrees, the impact of sugar cane production. In order to prevent the harm of sugarcane red blight and improve the yield of sugarcane, we conducted the investigation and study of the causes and diagnostic methods of sugarcane red blight in recent years. Now in Laibin County and Liao Ping farm survey results reported as follows. First, the main symptoms Sugarcane seedling stage is still normal growth, but tillering growth slowed down, the gradual emergence of the blight. Less disease tiller, stems thin, internodes short, narrow leaves. At first the tip of the old leaves turns yellow, auburn spots appear and spread to the base, after which the tip is withered and gradually extends towards the base to the entire leaf blade