四川旺苍县化龙乡土地质量及生态农业建设

为研究四川省旺苍县化龙乡土地质量,通过对449件土壤样品测试分析。结果显示:研究区土壤养分TFe2O3丰富(一等),Zn、Cu、MgO、K较为丰富(二等),P、CaO、Se较为缺乏,Ge、Mo缺乏,局部具富Ge土壤。综合养分以三等土壤为主,面积为25.96 km^2,占81.13%;二等土壤面积为3.69 km^2,占11.52%,四等土壤面积2.35 km^2,占7.37%。土壤质量综合评价一等优质土壤面积为0.02 km^2;二等良好土壤面积为0.44 km^2;三等中等土壤面积为17.84 km^2;四等差等土壤面积为13.64 km^2;五等劣等土壤面积为0.08 km^2。龙乡优质(一级)土地可适于发展有机、绿色食品。良好(二级)土地可适于发展无公害食品。中等(三级)土地种植较为安全。较差(四级)土地可适当发展林业。劣等(五级)土地可改造成建筑用地。为生态农业建设、振兴乡村经济提供技术支撑。

Land quality and ecological agriculture construction in Hualong township of Wangcang County,Sichuan Province

In order to study the land quality of Hualong Township in Wangcang County, 449 soil samples were tested and analyzed. The results show that TFe₂O₃ is rich (first class), Zn, Cu, MgO, K are abundant (second class), P, Cao, Se are relatively deficient, Ge and Mo are deficient, and some of them are rich in Ge. The comprehensive nutrients are mainly the third-class soil, with an area of 25.96 km², accounting for 81.13%; the second-class soil area is 3.69 km², accounting for 11.52%; the fourth-class soil area is 2.35 km², accounting for 7.37%. In the comprehensive evaluation of soil quality, the area of first-class high-quality soil is 0.02 km²; the second-class good soil area is 0.44 km²; the third-class medium soil area is 17.84 km²; the fourth grade soil area is 13.64 km²; and the fifth grade soil area is 0.08 km². Longxiang high quality (first grade) land is suitable for the development of organic and green food. Good (secondary) land is suitable for the development of pollution-free food. It is safe to plant medium (grade 3) land. Poor (grade 4) land can be properly developed forestry. Inferior (Grade 5) land can be transformed into construction land. To provide technical support for the construction of ecological agriculture and the revitalization of rural economy.