共 16 条
[1]
BOULD C, 1952, PROGR REP LONG ASHTO, P49
[2]
BUTTON E. F., 1957, American Potato Journal, V34, P56
[3]
DE R, 1965, INDINA FMG, V15, P8
[4]
DUTTA NP, 1960, INDIAN J AGRON, V4, P258
[5]
GRECHUKHINA O. A., 1961, Vestnik Leningradskogo Gosudarstvennogo Universiteta, V16, P35
[6]
HEADY EO, 1961, AGRICULTURAL PRODUCT, P108
[7]
KUTHY S., 1961, Orszagos mezogazdasagi Minosegvizsgalo Intezet Evkonyve, V5, P37
[9]
OLSEN STERLING R., 1954, U S DEPT AGRIC CIRC, V939, P1
[10]
SHEREVERYA N. I., 1959, FIZIOL RASTENII [TRANSL], V6, P18