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陈桥洲位于长江下游安徽省和县境内的一江心洲滩，原有血吸虫病流行，经过防治，1974年已查不到活螺，1982年前后粪检很难查出阳性病人。1970年紧临该洲上游400米处形成一新生的江心滩（当地称南滩）逐年增大并与老洲相连；滩上植被茂盛，1983年发现钉螺。为了掌握钉螺消长动态
Chenqiao Chau is located in the heart of Anhui Province and the lower reaches of the Yangtze River in the heart of the island beach, the original epidemic of schistosomiasis, after prevention and control, 1974 has not been found live snail, fecal seized in 1982 is difficult to detect positive patients. In 1970, a newborn river heart beach (locally called South Beach) was formed immediately after 400 meters upstream of the continent and was connected with Laozhou Island. The vegetation on the beach was flourishing, and snails were found in 1983. In order to master snail growth and dynamic