共 14 条
- [2] BARBER STANLEY A., 1962, SOIL SCI, V93, P39, DOI 10.1097/00010694-196201000-00007
- [7] Mitscherlich E. A., 1909, LANDWIRTSCHAFTLICHE, V38, P537
- [8] NICHOLS MA, 1971, THESIS U MASSEY
- [10] MAIZE FERTILIZER EXPERIMENTS IN WESTERN TANZANIA [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1968, 70 : 209 - &