Impact Of Waterlogging On Agriculture In The District Of Jianghan Plain

Waterlogging causes apparent reduction in crop yields around the world.Crops undergo plant responses and adaptation due primarily to the reduction in the soil oxygen concentrations in the plant root zoo that occur during waterloggd condition.This paper studies the mechanism of waterlogging,the disaster management process of waterlogging,and the response process of crop to waterlogging,and the concrete study of Jianghan Plain.Jianghan Plain is rich in water and heat,suitable for crop development,but low-lying,in the flood season there will be more rain,farmland drainage is not suitable for the heavy rain,and the occurrence of waterlogging disasters;this paper analysis Jianghan Plain terrain differences,analysis of different terrain soil fertility and swamp.Combined with regional characteristics to select suitable crops and production methods to improve land productivity and restore ecosystems.The researches are as follows:(1)Based on the relationship between groundwater and elevation,we discussesd the standard of soil damage analysis,and the waterlogging partition of Jianghan Plain was divided.Landsat 5 TM data were used to interpret the land use types in Jianghan Plain.The land use types were used to study the degree of soil erosion of different land use types.(2)The index system of waterlogging evaluation was established,and the waterlogging status of Jianghan Plain was evaluated,and the typical waterlogging damage area was analyzed.(3)According to the relationship between waterlogging and agricultural production,the countermeasures of using waterlogging land in Jianghan Plain are proposed.