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The status and exploitation strategies of cropland quality in Jishou County, Hunan Province
Author(s): 
Pages: 598-602
Year: Issue:  5
Journal: Research of Agricultural Modernization

Keyword:  croplandproductivity of croplandsoil obstruction factorsoil improvementJishou city;
Abstract: The productivity of cropland has direct influences on agricultural sustainable development and food security.This study evaluated the quality of cropland in Jishou County, Hunan Province according to national protocols of cropland quality measurement. The results showed that 26% and 74% the cropland soil has medium and low productivity,respectively. Specifically, cropland with medium and low productivity is mainly in dryland. Among the cropland, the area of grade three productivity was the largest(2189.7 hm2, 19.8% of total cropland area). In contrast, garden fields had a productivity grades from three to seven. The area of Grades 6 and 7 garden field were 2221.5(26.5%) and 3062.1(36.6%) hm2 respectively. Results also indicates that the types with larger area were the types of unfertile and obstruction layer. Areas of these two types were 6165.1 hm2 and 6418.2 hm2, respectively. They were 36.3% and 37.8% respectively,of the total area of the soils with obstruction factors. Thin tillage layers in dryland and unbalanced nutrients and nutrients deficiency in top soils were the main problems for croplands in Jishou. To improve productivity of the cultivated land,measures include eliminating the obstruction factors and speeding up the adjustment of cropping pattern in accordance with cropland productivity.
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