Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Tạp chí quốc tế 2023
Số tạp chí 11(2023) Trang: e16178
Tạp chí: PeerJ

To grow fruit plants, farmers in the Vietnamese Mekong Delta (VMD) must use
raised bed constructions to avoid waterlogging during the rainy season. This study
aimed to evaluate the effects of the age of the raised beds on the soil physicochemical
properties of longan orchards located in the VMD. Two raised bed systems were
evaluated: a young bed constructed 10 years ago and an old bed constructed 42 years
ago. Soil samples were collected from
five different soil layers (020, 2040, 4060,
60
80, and 80100 cm) with four replicates per layer. Soil samples were tested for
pH, electrical conductivity (EC), available phosphorus (AP), total nitrogen (TN), soil
organic matter (SOM), exchangeable cations (Ca
2+, K+, Mg2+, and Na+), cation
exchange capacity (CEC), bulk density (BD), soil porosity, available water-holding
capacity (AWC), particle composition (sand, silt, and clay), and size. The soil pH was
approximately 1.0 units lower in the old bed compared to the young bed at depths of
0
20 and 2040 cm. The BD was higher in the old bed (0.15 g cm-3) than in the
young bed at a soil depth of 0.4 m. SOM, AP, exchangeable cations (Ca
2+, Na+, and
Mg
2+), AWC, and soil porosity were significantly lower in both the topsoil (020 cm)
and subsoil (20
40 cm) layers in the old bed than in the young bed. In particular, the
SOM, AP, AWC, and soil porosity contents in the old bed decreased by 18%, 20%,
15%, and 17%, respectively, compared with those in the young bed at soil depths of
0
40 cm. Therefore, cultivating raised bed soil for a longer period significantly
reduced the soil exchangeable cations, porosity, and fertility of the surface and
subsurface soils. Based on these results, farmers should use soil conservation
practices, such as cover crops, rice straw mulching, and soil amendments in their
orchards to mitigate topsoil degradation.

Các bài báo khác
Số tạp chí Vol. 11(2023) Trang: 1398-1404
Tạp chí: Advances in Animal and Veterinary Sciences
Số tạp chí 35(2023) Trang: 104
Tạp chí: Livestock Research for Rural Development
Số tạp chí 35(2023) Trang: 56
Tạp chí: Livestock Research for Rural Development
Số tạp chí 2023(2023) Trang:
Tạp chí: Asian Journal of Agriculture and Biology


Vietnamese | English






 
 
Vui lòng chờ...