共 50 条
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- [4] NITROGEN-CONTENT OF RHIZOSPHERE SOILS OF WILD WEEDS AND CULTIVATED RICE CURRENT SCIENCE, 1977, 46 (01): : 19 - 20
- [6] EFFECT OF NITROGEN-FERTILIZER RATE ON SOIL NITRATE NITROGEN-CONTENT AFTER HARVESTING WINTER-WHEAT JOURNAL OF AGRICULTURAL SCIENCE, 1990, 114 : 171 - 176
- [8] HOP FERTILIZATION AND THE USE OF SOIL ANALYSES FOR MINERAL NITROGEN-CONTENT ROSTLINNA VYROBA, 1989, 35 (05): : 539 - 544
- [9] OBSERVATIONS ON SIMULTANEOUS VARIATION OF WATER AND MINERAL NITROGEN-CONTENT OF A SOIL ANNALES AGRONOMIQUES, 1969, 20 (06): : 627 - &
- [10] EVALUATION OF THE EFFICACY OF LIQUID FERTILIZER NITROGEN ON THE BASIS OF THE INORGANIC NITROGEN-CONTENT IN THE SOIL ARCHIV FUR ACKER UND PFLANZENBAU UND BODENKUNDE-ARCHIVES OF AGRONOMY AND SOIL SCIENCE, 1981, 25 (09): : 551 - 557