Thái Phiên, Mai Văn Trịnh, Nguyễn Công Vinh, La Nguyễn, Trần Sỹ Hải, Nguyễn Ngọc Mai (trang 109-116, 83)
Từ khoá: ảnh hưởng, canh tác, đất dốc, du canh, bỏ hoá, xói mòn
Soil erosion under different short fallow shifting cultivation systems on sloping land
Continuous monocropping with no fertilizer input in sloping land is not sustainable due to: high losses of plant nutrient and top soil due to erosion, crops yield rapidly declined and low by the time of cultivation. Soil and nutrient losses due to erosion under natural fallow and improved fallow decreased compared to that under continuous monocropping with 70-80% and 90-95% respectively while under intercropped hill rice-TC hedgerow, it could be reduced 40 to 50% compared to continuous monocropping. Mulching TC’s biomass reduced soil losses, nutrients losses, and increased hill rice yield.