四湖地区渍害低产田排水改良研究

江汉平原的四湖地区有耕地面积580万亩,渍害低产田占34.5％,成为发展农业生产的一大障碍。本文在研究渍害田分布,特征和成因的基础上,着重研究了:稻田治渍排水标准,提出适宜的垂直渗漏量是稻田治渍的重要指标;渍害稻田麦作期的地下水位控制;以及田间工程要求和田面水分管理的措施。为平原湖区渍害低产田防治提供了科学依据。

A Study on the Reclamation through Drainage of the Water-logged,low-yield Farmland in the Four lake Region

The arable land of the four lake region in changjiang-hanjiang plain tolals 5.8 million mu,34.5% out of which are water-logged,low-yeild fields.These fields hinder agro-production greatly. Based on the study of distribution, specification and cause of formation water-logged land, in this paper efforts have been stressed on the drainage criterion for logged rice field reclamation,of which the vertical seepage value has been put out as an important criteria for logged rice field reclamation; the controlling of underground water level through the wheat cultivation period of those logged rice fields ; and the requirements of field infrastructure and surface water control processes.It provides a scientific basis for reclamation of water-logged, low-yield fields in the lake region of the plain.