HỆ THỐNG CẤP, THOÁT NƯỚC CHO NUÔI TÔM THẺ CHÂN TRẮNG VÙNG VEN BIỂN

Abstract

Whiteleg shrimp is now going to be the main target species of the coastal provinces in the North Central Coast region. With an average yield of 10-20 tons/ ha/ feeding season, the whiteleg shrimp can reach the profit from 600 million VNĐ to 1000 million VNĐ/ ha/ feeding season, that resulting in many of the degraded and uncultivated lands have become “the golden lands” for the shrimp farming. Practice shows that besides the successes, there are still many problems, risks and unsustainability that the main causes are: Planning and constructing infrastructure of non-synchronous farming areas; the households are small, spontaneous and inexperienced in the arrangement of water supply and drainage systems; and there are no ponds that placed for water supply treatment, wastewater treatment. The consequence is the soil environment, polluted water, epidemic spread. This lead to more high risks in farming area and break the coastal ecosystem

The paper presents the results of the study to propose solution for arranging water supply and drainage system for the tidal area and sand culture area with 4 cases. (1) farming mode l with the water supply canals and drainage canals are separated and the sedimentation ponds and treatment ponds are concentratively arranged; (2) farming model with the storage and sedimentation ponds are concentratively arranged and the treatment ponds are dispersedly arranged; (3) farming model with the sedimentation ponds and the treatment ponds are dispersedly arranged; (4) farming model with the storage and sedimentation ponds are dispersedly arranged and the treatment ponds are dispersedly concentratively. This research will contribute to limiting of environmental pollution, disease and towards sustainable aquaculture production that can be replicated to other areas.