類似資料

1. 1 Soil sampling and methods of analysis / edited by Martin R. Carter
2. 2 Soil sampling, preparation, and analysis / Kim H. Tan : hardcover
3. 3 Precision agriculture : spatial and temporal variability of environmental quality
4. 4 The state of site-specific management for agriculture : invited chapters and the proceedings of a symposium sponsored by Divisions S-6, S-4, S-8, and S-5 of the Soil Science Society of America, Division A-3 of the American Society of Agronomy, and the North Central Regional Committee on Site-Specific Management (NCR-180) in St. Louis, Missouri, 31 October 1995 / editors, F.J. Pierce and E.J. Sadler ; organizing committee, F.J. Pierce ... [et al.]
5. 5 Keynote address and discussion, 7th annual conference : 'Precision agriculture - practical applications of new technologies' / by John S Gummer, keynote address ; Peter Botschek, introduction ; plenary discussion, chaired by Barry Higgs