枯萎病、黄萎病是棉花的两大主要病害,发病后引起叶片和蕾铃的大量脱落直至枯死,轻则减产10%,重则减产30%～50%,且棉花的品质明显下降。对于棉花枯黄萎病,必须采取综合防治措施,才能有效地抑制病害的发生。1.症状表现。棉花枯、黄萎病属于维管束病害。病菌危害棉株输导组织,造成全株发病,病株由于水分的输送受阻表现出萎蔫症状,同时叶片、株形 Verticillium wilt and Verticillium wilt are the two major diseases of cotton. After the onset of the disease, a large number of leaves and buds fall off until they die, ranging from a decrease of 10% to a decrease of 30% to 50% and a significant decrease of cotton quality. For cotton withered wilt disease, we must take comprehensive prevention and control measures in order to effectively inhibit the occurrence of disease. 1. Symptoms. Cotton withered, Verticillium wilt is a vascular disease. Pathogenic bacteria harm cotton-bearing tissues, resulting in the whole plant disease, diseased plants due to water transport hindered wilting symptoms, while leaves, plant-shaped