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射洪位于四川涪江流域中游,土质较肥沃,年平均气温17℃上下,无霜期260—280天,年降雨量1,000毫米左右,适于种棉,是四川省主要产棉县之一。1950年在紫云乡天元桥旁边谭方文的3亩低洼棉田内首先发现枯萎病,此后逐步蔓延。据1951年调查,紫云乡有2—3个村发病,面积52.8亩,1952年扩大到附近13个乡,发病面积总共2,500亩。据1963年7月上旬的普查,全县72个公社几乎社社有病。
Shehong is located in the middle reaches of the Fujiang River in Sichuan Province. It has fertile soil with an average annual temperature of 17 ℃. It has a frost-free period of 260-280 days and an annual rainfall of about 1,000 mm. It is suitable for planting cotton and is one of the major cotton-producing counties in Sichuan. In 1950, Tianyuan Bridge, Ziyun Township, next to Tan Fangwen 3 acres of low-lying cotton field first discovered wilt disease, then gradually spread. According to the 1951 survey, Ziyun Township has 2-3 villages with an area of 52.8 mu. It was expanded to 13 nearby townships in 1952 with a total area of 2,500 mu. According to the census in early July 1963, 72 communes in the county were almost sick.