PHÂN TÍCH HIỆU QUẢ KINH TẾ CỦA MÔ HÌNH MỘT VỤ CHUYÊN TÔM VÀ MỘT VỤ XEN GHÉP TẠI XÃ QUẢNG CÔNG, HUYỆN QUẢNG ĐIỀN, TỈNH THỪA THIÊN HUẾ = ANALYSING ECONOMIC EFFICIENCY IN THE CROP ROTATION OF SHRIMP MONOCULTURE AND POLYCULTURE MODELS AT QUANG CONG COMMUNE, QUANG DIEN DISTRICT, THUA THIEN HUE PROVINCE

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Tác giả: Thị Mai Nguyễn, Hồng Hiếu Trần, Thị Thanh Nhàn Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Đại học Đồng Tháp: Chuyên san Khoa học Xã hội và Nhân văn, 2020

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 473048

Thêm vào giỏ

Aquaculture activities in Quang Cong Commune, Quang Dien District have considerably impacted on the living of local people as well as the sustainable development of Tam Giang - Cau Hai Lagoon ecosystem. On surveying 36 aquaculture households in the high tide area with one semi-intensive shrimp crop and one poly-culture crop model, the obtained result shows that the average profit of poly-culture is 37.15 million VND/0.36 ha, i.e.1.95 times higher than shrimp monoculture with 19.1 million VND/0.36 ha. This translates the profit-to-cost ratio of poly-culture season and mono-culture season is 0.61 and 0.22 times, respectively. The main reason is that feed cost in poly-culture crop is only about 56% of that for mono-culture crop because the fish can eat the leftover food of shrimp, natural feed sources and crab can eat small crustaceans in ponds and dead shrimps, thus helping reduce feed cost and improve the water quality in ponds. Hoạt động nuôi trồng thuỷ sản ở xã Quảng Công, huyện Quảng Điền ảnh hưởng lớn đến sinh kế của người dân cũng như sự phát triển bền vững của hệ sinh thái vùng đầm phá Tam Giang-Cầu Hai. Trên cơ sở khảo sát 36 hộ nuôi trồng thuỷ sản ở vùng cao triều áp dụng hình thức nuôi một vụ chuyên tôm bán thâm canh và một vụ xen ghép thả nuôi các đối tượng sống ở các tầng nước khác nhau như tôm, cá, cua, kết quả cho thấy lợi nhuận trung bình của vụ nuôi xen ghép là 37,15 triệu đồng/0,36 ha, hơn gấp 1,95 lần so với vụ chuyên tôm với 19,1 triệu đồng/0,36 ha dẫn đến tỷ suất lợi nhuận của vụ xen ghép và vụ chuyên tôm lần lượt là 0,61 lần và 0,22 lần. Nguyên nhân chính là do chi phí thức ăn ở vụ xen ghép chỉ bằng khoảng 56% vụ chuyên tôm nhờ tận dụng nguồn thức ăn thừa từ tôm cho cá và cua, một số loài cá ăn tạp vừa giúp giảm chi phí thức ăn vừa làm sạch môi trường ao nuôi.

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