Study on Site Selection Zoning of Dry Land Transformed into Paddy Field Project in Wuhan City Based on the Suitability Grading of Cultivated Land Reconstruction

For a long time, paddy field as high-quality arable land for growing rice crops, is an important carrier to guarantee food security, and is also a strategic land resource under national priority protection. In recent years, in order to improve the quality of arable land, some places have tried to transform dry land into paddy field, and some results have been achieved. This article sorts out the practical experience of dry land transformed into paddy field in various regions, combined with literature research, and takes Wuhan City as an object, put forward a series of restrictive factors for the dry land transformed into paddy field, and an evaluation index system for the suitability of dry land transformed into paddy field with 14 factors including topographical conditions, soil conditions, field utilization conditions, and management conditions was constructed, and measured the suitability of Wuhan’s cultivated land to be changed from drought to water. Next, from the point of view of dry land transformed into paddy field project site selection, the grading standard of dry land transformed into paddy field suitability was studied, and the type of site selection was divided. Finally, a comparative analysis was carried out using multi-year project implementation cases, and the results showed that 75% of the implemented projects fell into highly and moderately suitable areas for reconstruction. This shows that the theoretical methods proposed in this paper are scientific and feasible, and the evaluation results are objective and reasonable, which can provide reference for the site selection and zoning planning of drought-to-water projects in similar areas in China.