共 7 条
[1]
CHANG BT, 1971, CAN J SOIL SCI, V51, P125
[4]
RANDHAWA G S, 1971, Journal of Research Punjab Agricultural University, V8, P304
[5]
SINGH SP, 1972, INDIAN J AGR SCI, V42, P485
[6]
Srivastava S. N. L., 1974, Indian Journal of Agronomy, V19, P227
[7]
TOMAR PS, 1970, ANN ARID ZONE, V8, P130