共 50 条
- [25] PHOSPHORUS STATUS OF SOME ETHIOPIAN SOILS .3. EVALUATION OF SOIL TEST METHODS FOR AVAILABLE PHOSPHORUS TROPICAL AGRICULTURE, 1991, 68 (01): : 51 - 56
- [26] THE SULFUR STATUS OF SOILS FROM THE SOUTH EAST OF SCOTLAND RESEARCH AND DEVELOPMENT IN AGRICULTURE, 1986, 3 (01): : 39 - 42
- [30] COMPARATIVE STUDIES ON AVAILABLE MANGANESE STATUS OF SOME INDIAN SOILS AGROCHIMICA, 1971, 15 (2-3): : 228 - +