Physical fertility of typical Mekong delta soils (Vietnam) and land suitability assessment for alternative crops with rice cultivation
Most of the soils in the Mekong delta, Vietnam are formed and developed during the Holocene period. The first Viet people came to reclaim and exploit this plain at the beginning of the 17th century. As a result, in the middle of the 19th century, the Mekong delta had become the largest region of agricultural production, essentially rice produce for marketing purposes. Around 1980 three rice crops in a year were applied. That system continued to increase with time within the recent past 10 years. This land use system has mainly enlarged on the areas along Hau and Tien river.
Nowadays, in the Mekong delta, rice yield and production in the developing and well developed alluvial soil groups tend to be stable. However, there is a tendency to gradual decrease year to year, although chemical fertilizers and other amendments were intensively applied. This study is carried out in order to conserve the natural land resources of the Mekong delta. The study focuses and evaluates mainly physical soil characteristics which are related to physical soil degradation of the selected major soil groups in the area of mono and intensive rice cultivation as Chau Thanh (Tra Vinh province), Vung Liem (Vinh Long province), Cai Lay (Tien Giang province), Cao Lanh (Dong Thap province), Tan An (Long An province), Phung Hiep (Can Tho province), Vinh Chau (Soc Trang province), O Mon (Can Tho province), Tinh Bien (An Giang province), and Moc Hoa (Long An province).
Khoa Le Van | alfa
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