共 42 条
[25]
PEARSON ROBERT W., 1962, SOIL SCI, V93, P77, DOI 10.1097/00010694-196202000-00001
[27]
PEREZESCOLAR R, 1978, J AGR U PUERTO RICO, V62, P203
[28]
EFFECTS OF SUBSOIL ACIDITY ON THE SHOOT AND ROOT-GROWTH OF SOME TROPICAL AND TEMPERATE FORAGE LEGUMES
[J].
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH,
1981, 32 (03)
:453-463
[30]
PONNAMPERUMA FN, 1982, 9TH P INT PLANT NUTR, V2, P467