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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">Nguyễn, Văn Duyệt</subfield>
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   <subfield code="a">Điều tra và khảo sát vai trò thiên địch của nhện thuộc họ tetragnathidae (Araneae. Arachnida) trên ruộng lúa ỏ tỉnh Vĩnh Long</subfield>
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   <subfield code="c">Nguyễn Văn Duyệt</subfield>
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   <subfield code="a">Cần Thơ</subfield>
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   <subfield code="b">Trường Đại học Cần Thơ</subfield>
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   <subfield code="c">2001</subfield>
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   <subfield code="a">Trong số các loài sâu thiên địch nhện là một nhóm lớn đóng vai trò quan trọng giữ mật độ sâu hại dưới ngưỡng gây hại cho cây trồng. Trên lúa vai trò của nhện đã được khẳng định, chúng săn bắt hữu hiệu các loại rầy, bướm và sâu non của các loài sâu đục thân, sâu cuốn lá...Tetragnathidae là loài nhện giăng lưới sống rất phổ biến trên ruộng lúa và hiện diện với mật số cao trên các ruộng ít có phun thuốc trừ sâu.Và nó cũng hiện diện ở các vườn cây ăn trái .</subfield>
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   <subfield code="a">Field crops,Plants, effect of pesticides on,Plants, protection of,Rice</subfield>
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   <subfield code="x">Diseases and pests,Diseases and pests</subfield>
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   <subfield code="i">Truc, QHieu</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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