Abstract:

To clarify the types of farmland soil texture and texture configuration in Hefei, understand their spatial distribution characteristics in different soil types and administrative regions, and further improve the texture and quality of farmland, based on the data of cultivated land quality monitoring points in Hefei from 2018 to 2020, and combined with Soil Records of each county and district, the spatial characteristics of farmland soil texture and texture configuration in Hefei were analyzed with the support of ArcMap 10.6 software. The results showed that: (1) the cultivated land topsoil texture in Hefei was mainly medium loam soil and heavy loam soil, Chaohu City and Lujiang County had mainly heavy loam soil texture, Feidong County and Feixi County had mainly medium loam soil texture, and the cultivated land topsoil texture was relatively good; (2) the texture configuration of cultivated land in Hefei mainly included upper loose and lower tight type and compact type, the texture configuration of cultivated land in Chaohu City, Feidong County and Feixi County were mainly upper loose and lower tight type, while the texture configuration of cultivated land in Lujiang County and Changfeng County were mainly compact type; (3) to improve the configuration of sandy soil and clayey soil in Hefei, mainly for thin layer type, loose type and upper tight and lower loose type, there are five methods: foreign soil improvement method, organic material backfilling method, mechanical soil improvement method, flood diversion and diffuse siltation method and soil profile reconstruction method. In general, most farmland soils in Hefei are sticky and have good texture configuration ventilation. Targeted improvement measures should be taken for poor texture configuration soils such as sandy clayey soil, so as to improve soil fertility and the quality of cultivated land.

Key words: texture, texture configuration, spatial characteristics, improvement of cultivated land quality, Hefei