共 50 条
- [23] RESIDUAL FORMS OF FERTILIZER NITROGEN IN FIELD SOILS [J]. SOIL SCIENCE, 1978, 125 (03) : 165 - 169
- [26] EXTRACTABLE IRON AND ALUMINUM AND THEIR RELATIONSHIP TO PHOSPHATE RETENTION IN IRISH SOILS [J]. IRISH JOURNAL OF AGRICULTURAL RESEARCH, 1976, 15 (01): : 65 - 73
- [28] FACTORS AFFECTING DTPA-EXTRACTABLE ZINC IN SODIC SOILS [J]. SOIL SCIENCE, 1983, 136 (06) : 359 - 366