. 10% , , . Suttle . (1975) , 10% 50% .. , . , , , , , .
. . . . Bremner at al.,(1976). 40 (30 , ), 220 420 / , 4, 2. 8 1,5% , , , 16% 100 40 /. , . 2000 , 1000 (Miller et al., 1989). , , , , , 20 . Zn 1000 Zn . - ZnO, , (Lee et al., 1991).
. , 1400 Mi- , 10 (NRC, 1980). Fe 500 800 / 134 16 / 8 (Philippoetal., 1987). , , , (Underwood and Suttle, 1999). , ,
. (Kirchgessner and Weser, 1965; Dick, 1954). Kirchgessner (1965) 0,70 0,95% . , (Huber and Price, 1971) . .
|
|
. ,
. , , (Du et al., 1996). , , . , - , . . .
, . , (Langlands eT al., 1986; Kegley and Spears 1993). (Chapman and Bell, 1963). . , (Kincaid et al., 1986). . Wittenberg etal.,(1990) . - . Ward and Spears (1993) , - . Rabmnsky et al.,(1999) and Nockels et al., (1993) , - , .
, , , . ; , (Ammerman and Miller, 1972). (Xin et al., 1991; Kegly and Spears, 1993). , 24 , , 6-8 . (Judson, 1984; Richards, 1985). , , , . (Kincaid et al., 1986) - . , (Du et al., 1996, Wittenberg, 1990) . , , 20% , (Ivan et al., 1990), ,
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144
. 6.
. , .
, . - , , . ( ), , , , {Underwood, 1981). , , . (, 1981), . , , (Xinetal, 1993;Xinetal., 1991; Stabeletal., 1993).