共 50 条
- [6] DETERMINATION OF WATER-INSOLUBLE NITROGEN IN MIXED FERTILIZERS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1970, 53 (04): : 808 - +
- [8] COMPARISON OF SLOW-RELEASE NITROGEN AND WATER-INSOLUBLE NITROGEN METHODS FOR FERTILIZERS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1967, 50 (02): : 414 - &
- [9] COLLABORATIVE STUDY OF DETERMINATION OF WATER-INSOLUBLE NITROGEN IN FERTILIZERS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1973, 56 (04): : 853 - 858
- [10] STUDIES ON BIODEGRADABILITY OF WATER-INSOLUBLE NITROGEN SOURCES IN FERTILIZERS JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1965, 48 (02): : 389 - +