共 39 条
[3]
BARTLETT HD, 1971, LIVESTOCK WASTE MANA, P258
[4]
BEAR FE, 1946, B NEW JERSEY AGR EXP, V730
[5]
BERINGER H, 1984, NUTR BALANCES FERTIL, P91
[6]
BERRY JT, 1986, Y197 NAT FERT DEV B
[7]
BULLEY NR, 1982, CAN AGR ENG, V24, P19
[8]
COOTE DR, 1975, SEARCH AGR, V5
[9]
DALTON GE, 1982, MANAGING AGR SYSTEMS
[10]
DANIEL TC, 1982, WATER RESOUR BULL, V18, P117