共 50 条
- [23] CHANGES IN THE CONTENTS OF SELECTED NITROGEN FRACTIONS IN THE SOIL DURING THE GROWING-SEASON OF WINTER-WHEAT ROSTLINNA VYROBA, 1988, 34 (09): : 943 - 949
- [26] INFLUENCE OF GROWING-SEASON AND INSECTICIDE FREQUENCY ON CABBAGE LOUISIANA AGRICULTURE, 1986, 30 (02): : 6 - 7