Lê Văn Khoa, Nguyễn Mạnh khải (trang 184-188) Từ khoá:  cây keo đậu, Leucaena leucocephala, cải tạo đất, thoái hoá, thức ăn gia súc   Summary Leucaena leucocephala – a potential source for improvement of degraded soils and for forage Results of 2 year filed experiments with Leucaenas and Leucaena KX2 hybrid: Leucaena KX2 hybrid …

Phạm Quang Hà, Bùi Thị Phương Loan, Cao Kỳ Sơn, Vũ Đình Tuấn (trang 177-183) Từ khoá:  quan trắc, phân tích, đất mặn, nhiễm mặn, Nghĩa Hưng, Nam Định   Summary Monitoring and analysis of saline soil in Nghia Hung district, Nam Dinh province Saline soil monitoring and analysis (1998-2000): salinity is closely related with …

Phạm Văn Khương (trang 170-176) Từ khoá:  khảo sát, phân cấp, hạn hán, lưu vực, sông Thạch Hãn, Quảng Trị   Summary Drought category of Thach Han river basin, Quang Tri province Tere are many methods of drought category. Method used is of thermal -hydro coefficients (K) category for drought category of Tahnh Han river …

Thái Phiên, Mai Văn Trịnh, Đỗ Cảnh Dương (trang 161-169) Từ khoá:  xói mòn, đất, đất đồi, Ninh Sơn, Ninh Thuận   Summary Soil erosion on hilly land, Ninh Son district, Ninh Thuan province Study in area of 31,791 ha in 5 communes in hilly and mountainous area in Ninh Thuan. Aim is to calculate …

Trần An Phong, Lê Hồng Sơn, Trần Thị Tố Linh (trang 154-160, 169) Từ khoá:  rau, Burdox, Nhật Bản, kinh tế môi trường   Summary Japanese Burdox (Gobo) growing in Vietnam and some opinions concerning environmental economics Burdock is a root vegetable. Its seeds are utilized for medicine and had been introduced as a medical …

Lê Thái Bạt (trang 146-153) Từ khoá:  môi trường, đất, hiện trạng   Summary Land environment status by the year 2001 Total area is 33 million hectares, 14 soils groups, 31 soil units. Natural land and cultivated land per capital are low (0.4 and 0.1 hectare respectively). Land resource use is found unreasonable and inefficient. …

Nguyễn Công Vinh, Thái Phiên (trang 136-145) Từ khoá:  cân bằng, dinh dưỡng, nông lâm, đất dốc   Summary Nutrient balance in slopping land affected by the different cultivation practices in Luong Son district, Hoa Binh province Soil types in research are strongly weathered red-yellow soils. Upland rice, beans are common practices of farmers in …

Trần Thế Tục (trang 130-135) Từ khoá:  phân vùng, sản xuất, đất, trồng cây, cây ăn quả   Summary Fruit production zoning and cultivation in Vietnam Fruit production is increasing remarkably along with the increase in the cultivating area. Mekong river delta region is the biggest fruit production area in Vietnam (appr. 43% of total …

Nguyễn Xuân Cự (trang 122-129) Từ khoá:  phân tích, tính ổn định, canh tác, lúa, Đồng bằng sông Hồng   Summary Stability of paddy rice systems in the Red river delta and factors affecting its sustainable development The combination of traditional experiences and the new technology is essential for the sustainable development of agriculture. The …

Nguyễn Xuân Trường, Mai Văn Quyến, Lê Lân (trang 116-121) Từ khoá:  hiệu lực, phân bón, magie, lúa, đất xám vàng, Đông Nam Bộ   Summary The effect of magnesium fertilizer on rice on acrisols in the south-east of Vietnam Study showed that rice yield was raised when soil exchangeable Mg ++ was in a …