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桐柏县二郎山灌区东起二郎山水库,西至唐河、桐柏县界,北与泌阳交界,南临三夹河和鸿雁河,总面积113.45km2,属于长江流域唐白河水系。灌区受益二郎山、安棚、新集、埠江四个乡镇、25个行政村,区内人口3.5万人,总土地面积1.13万hm2,总耕地面积4533hm2。
Erlangshan Irrigation District east of Erlang Mountain Reservoir, west of the Tanghe, Tongbai County boundary, north and Biyang junction, south Sanjiahe and Hongyanhe, with a total area of 113.45km2, belonging to the Yangtze River Tangbaihe River system. The irrigated area benefits from Erlangshan, Anpeng, Xinjiu and Bujiang with four towns and 25 administrative villages. The population of the district is 35,000 with a total land area of 11,300 ha and a total area of 4533hm2.