NHỮNG YẾU TỐ HẠN CHẾ SẢN XUẤT NÔNG NGHIỆP VÀ GIẢI PHÁP SỬ DỤNG BỀN VỮNG ĐẤT DỐC Ở SƠN LA / Giới, Ngô Văn
Tác giả : Giới, Ngô Văn
Nhà xuất bản : Nhà xuất bản Nông nghiệp
Năm xuất bản : 2010
Chủ đề : 1. Đất dốc. 2. Sản xuất nông nghiệp. 3. Sơn La. 4. Sử dụng bền vững. 5. Article.
Thông tin chi tiết
Tóm tắt : | Son La Province is located in the Northwest of Vietnam. It has a total area of 14,055,500 ha and a population of 975,460 people with a density of 69 person per km2. Most of the area in Son La (about 1.2 mil. ha, accounting for 85% of the province’s natural area) has very high slop above 250, leaving only 8% of its total area with a slop of between 15-250 and 7% with a slop below 150. This paper aims to evaluate the current situation of land use as well as the development trend in the future. The paper analyzes the limiting factors and proposes solutions for sustainable sloping land use in Son La. The research findings showed that there were a number of factors that limit crop yield and agricultural production in slopping land. High slope of land is the main cause of erosion and soil degradation in Son La. On the one hand, it leads to soil with light texture, high acid and low contents of humus and nutrients elements, especially available phosphorus. On the other hand, low forest cover will increase evaporation and drought in the dry season and floods in the rainy season. Although most of agricultural land is located on the hillsides with high slope, farmers usually grow crops using traditionally extensive farming systems and monoculture without soil erosion protection. In order to sustainably use agricultural and, it is necessary to apply modern agricultural technology in slopping land, i.e., SALTs, VAC, RVAC or multiple cropping systems in this area. Among them, crop varieties, production seasons and agroforestry systems are highly emphasized. |
Thông tin dữ liệu nguồn
Thư viện | Ký hiệu xếp giá | Dữ liệu nguồn |
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Viện Tài nguyên và Môi trường - ĐHQGHN |
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https://repository.vnu.edu.vn/handle/VNU_123/10182 |