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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">Ảnh hưởng của vi khuẩn cố định đạm lên năng suất cây lúa (Oryza sativa L.) trồng ở huyện Thới Lai, Tp. Cần Thơ :</subfield>
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   <subfield code="b">Chuyên ngành Sinh thái học</subfield>
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   <subfield code="c">Nguyễn Quốc Nam; Nguyễn Hữu Hiệp (Hướng dẫn khoa học)</subfield>
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   <subfield code="b">Trường Đại học Cần Thơ</subfield>
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   <subfield code="c">2009</subfield>
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   <subfield code="a">Nội dung đề tài là xác định khả năng tăng năng suất lúa khi chủng vi khuẩn cố định đạm. Từ đó đề xuất áp dụng công thức bón phân vi sinh kết hợp với phân đạm hóa học một cách thích hợp trong sản xuất lúa tại huyện Thới Lai, Tp. Cần Thơ.</subfield>
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   <subfield code="i">Năm</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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