试论江汉平原地下水浸渍对农业生产的危害

A PRELIMINARY STUDY ON GROUNDWATER SATURATION OF FARMLAND AND ITS DAMAGE TO AGRICULTURE PRODUCTION ON JIANGHAN PLAIN

地下水浸渍农田.危害农业生产在我国南方较为普遍.本文以江汉平原为例.论述了它对农业生产的危害、形成和分布的规律以及造成的土壤理化性状的变化.最后提出了渍害农田的改造治理及试验研究的意见.

In the south of China, it is common that groundwater soaks farmland and harms agriculture production. The paper discussed the harm of groundwater soak to the main crops such as wheat, cotton and rice in Jianghan plain. Based on the topography and original matter of soil, the paper also dealed with the formation and distribution of groundwater of this area. the paper discussed the changes of the physiochcmical characters of groundwater soaking farmland, such as the phreactic level, soil structure type, temperature, water-air rate, redox potential and organic-part. The author finally proposed the methods harnessing soak of groundwater. The methods include transforming natural characteristic, controlling the man-made factor, taking the synthetic measures (hydraulic, chemical and biological ). Therefore the paper also suggested that it is necessary to enhance hydrogeological researches, such as observations and experiments of groundwater movements in soil, the study of groundwater in cultivated land and its hydrochcmistry.