Phạm Tiến Hoàng (trang 158-166)
Từ khoá: biện pháp, biện pháp sinh học, cải tạo, đất đồi, thoái hoá, bạch đàn,
Application of biological measures in improving degraded upland soil after a long-term of Eucalyptus plantation
After long-term of Eucalyptus plantation, the soil became compact, loss of water infiltration and retention capacity, because acid, low CEC and exhausted in major and minor nutrients. Growing of some legumes as cover plant such as groundnut, tephrosia candida, mucuna… can produce 12-15 tons and 20-25 tons of biomass per hectare per year respectively. This can improve soil properties and soil fertility. After 3 years of legumes’ growing, thanks to substantial soil fertility improvement, sone trees/fruits trees (Lychee) can grow better than before.