共 12 条
- [5] Keeney D. R., 1982, AGRON MONOGR, V9, P643, DOI DOI 10.2134/AGR0NM0N0GR9.2.2ED.C33
- [6] Kobo K., 1969, Journal of the Science of Soil and Manure, Japan, V40, P288
- [8] OTSUKI A, 1967, WATER POLLUT RES, V4, P54
- [9] SHIOIRI M, 1940, SPECIAL REPORT AGR E, P1
- [10] EVALUATION OF A CHEMICAL INDEX OF SOIL NITROGEN AVAILABILITY [J]. SOIL SCIENCE, 1971, 111 (04) : 228 - &