共 8 条
- [1] CUMMING BRUCE C., 1963, CANADIAN JOUR BOT, V41, P901
- [2] CUMMING BRUCE G., 1963, CANADIAN JOUR BOT, V41, P1211
- [3] FRIEND D. J. C. et al., 1961, Canadian Journal of Plant Science, V41, P418
- [4] Garner WW., 1920, J AGR RES, VXVII, P553
- [5] MOLGA M, 1958, AGRICULTURAL METEORO
- [6] MURNEEK AE, 1948, S VERNALIZATION PHOT
- [7] A SPECTRAL LIGHT-METER - ITS CONSTRUCTION, CALIBRATION, AND USE [J]. ECOLOGY, 1963, 44 (02) : 419 - &
- [8] WITHROW RB, 1959, 55 AM ASS ADV SCI ED