安徽省天长县粮食生产连续十年丰收。1987年,该县粮食总产近6亿公斤。为了增强农业后劲,进一步建立稳产高产农田,他们将改造中低产田列为一项重要工作来抓,要求能排、能灌、能降,把水治到田间,使治水再上新水平。1986年,天长县开展改造中低产田试点,在上泊湖圩区高标准建设了3000亩农田,收到 Tianchang County, Anhui Province, food production for ten consecutive years of harvest. In 1987, the county’s total grain output nearly 600 million kilograms. In order to enhance agricultural stamina and further establish a stable and high-yielding farmland, they will make efforts to rebuild low and middle-yielding fields as an important task and demand that they can be discharged, irrigated and lowered, and water can be brought to the fields to make flood control a new level. In 1986, Tianchang County to carry out pilot projects in the transformation of low-yielding fields, in the polder area Shangpo Lake built a high standard of 3,000 acres of farmland, received