共 9 条
- [1] Borthwick H. A., 1952, 13 INT HORT C, P801810
- [3] Garner WW, 1930, J AGRIC RES, V41, P0719
- [4] Hartwig E. E., 1973, AGRONOMY, P187
- [6] HARTWIG EE, 1970, TROP SCI, V12, P47
- [7] JOHNSON HERBERT W., 1960, BOT GAZ, V122, P77, DOI 10.1086/336090