棉红叶茎枯病,又称红叶枯病或凋枯病,它是我国广大棉区发生较久和危害较大的一种生理性病害,对棉花产量和品质影响很大。建国以来,不少棉花工作者曾对它进行了调查研究。对其发生原因看法有二:一种认为是因气候及土、肥、水失调;另一种认为是因缺钾所致。为了使广大棉花生产者进一步明确两者在病状上的区别,以便采取 Cotton leaf blight stem blight, also known as red leaf blight or blight, is a physiological disease that occurs for a long time in China’s vast cotton area and harms more, and has a great impact on cotton yield and quality. Since the founding of the People’s Republic, many cotton workers conducted a survey on it. There are two reasons for its occurrence: one is due to climate and soil, fertilizer, water disorders; the other is due to potassium deficiency. In order for the majority of cotton producers to further clarify the difference between the two in order to take