Tạp chí
Võ Thị Gương, Dương Minh, Nguyễn Khôi Nghĩa, Trần Kim Tính (trang 29-31)
Từ khoá: suy thoái, hoá học, vật lý, vườn, cam, Đồng bằng sông Cửu Long
Summary
Soil physical and chemical degradation of citrus plantation in the Mekong delta
6 citrus plantations were selected in a range of 7, 9, 16, 26, 33 years old raised bed. Experimental results: increasing the age of raised beds, soil degradation was clearly found. Raised beds of 26 and 33 years old have soil pH below 5, very poor in organic matter and P available, low total N and organic labile N, low base saturation. Zn concentration was in a level of in adequate for requirement of citrus plant. Soil penetration resistant of these raised beds was in a range of soil compaction. Water permeability in soil of old raised bed, 26 and 33 years, was low compared to raised bed of 7, 9, 16 years old. Therefore, soil raised bed from over 26 years old need to be improved of soil pH, soil nutrients and reclaimed soil compaction.
