共 6 条
[1]
DIVISION IV - SOIL FERTILITY - THE EFFECT OF SPRING NITROGEN FERTILIZATION ON PLANT CHARACTERISTICS OF WINTER WHEAT
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1953, 17 (01)
:39-42
[2]
LAUDE H. H., 1938, Journal of the American Society of Agronomy, V30, P610
[3]
LEVI I., 1950, CANADIAN JOUR RES SECT F TECHNOL, V28, P71
[4]
LOCKE L. F., 1942, JOUR AMER SOC AGRON, V34, P628
[5]
LUGINBILL P, AGRON J
[6]
QUISENBERRY KARL S., 1928, JOUR AMER SOC AGRON, V20, P492