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种传和土传的病原物可单一或联合导致棉花复合苗病。我们所谈的病原物绝大多数是指广布的真菌,它们和许多与棉花同地生长的其它寄主有联系。病原线虫常常与这些真菌相联合,这些病原物的复合作用能引起比单一真菌更严重的病害问题。每一种病原菌产生的影响变成了由几种病原物同时侵害棉种和幼苗而所致的复合症状。这种病害的复合症状包括各种比例的种子或幼芽出土前腐烂、出苗前后棉苗的褪绿和坏死、棉苗矮
Germ-line transmission and soil-borne pathogens can lead to single or combined cotton seedling disease. The vast majority of the pathogens we are talking about are wide-spread fungi that are linked to many other hosts that grow in line with cotton. Pathogenic nematodes are often associated with these fungi, and the complexing of these pathogens can cause more serious disease problems than single fungi. The impact of each pathogen has become a compound symptom caused by the simultaneous infestation of several cotton germs and seedlings with several pathogens. Symptoms of this disease include decaying of various proportions of seed or shoots before emergence, chlorosis and necrosis of cotton seedlings before and after emergence,