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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">Phân tích hiệu quả kỹ thuật của nông hộ trồng khoai lang ở huyện Bình Tân, tỉnh Vĩnh Long :</subfield>
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   <subfield code="b">Luận văn tốt nghiệp thạc sĩ ngành. Kinh tế học</subfield>
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   <subfield code="c">Võ Thị Tường Vy ; Nguyễn Hữu Đặng (Cán bộ hướng dẫn)</subfield>
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   <subfield code="c">2020</subfield>
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   <subfield code="a">Mục tiêu của nghiên cứu là ước lượng hiệu quả kĩ thuật và phân tích các nhân tố ảnh hưởng tới hiệu quả kĩ thuật của các nông hộ trồng khoai lang dựa trên bộ dữ liệu thu thập từ 120 hộ trồng khoai lang ở huyện Bình Tân, tỉnh Vĩnh Long.  Hàm sản xuất biên Cobb - Douglas kết hợp với hàm hiệu quả phi kỹ thuật (technical  inefficiency model) được sử dụng để phân tích bằng chương tr̀nh FRONTIER 4.1. Kết quả phân tích cho thấy, hiệu quả kỹ thuật trung bình của các hộ trồng khoai lang là 90,9%. Bên cạnh đó, các yếu tố diện tích, phân đạm và số ngày công lao động có tác động tích cực đến năng suất khoai lang.</subfield>
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   <subfield code="a">Agriculture,Nông nghiệp</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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