1112

,7t/ha,21mg/100gP2O5,25mg/100g2O,,6,5t/ha. =7t/ha P2O5=21mg/100g 2O =25mg/100g Rp =6,5t/ha

mg/100g P2O5

K2O , %P2O5 K2O

() () 5 5 (+100-200% ) 100

() 5-10 5-10 (+30-50% )

80-90

( ) 10-15 10-15 (+10-30% )

60-70

( ) 15-25 15-25 ( )

50-60

( ) 25-40 25-40 ( 20-30% )

30-40

( )

40-50 40-50

( 1-3 )

1-3

() 50 50

. ,

. 2. (AL , Egner, Riehm, 1958) (, 1988)

.17t/ha : N26kg/t*7t/ha=182kg/7t/ha P2O511kg/t*7t/ha=77kg/7t/ha 2O25kg/t*7t/ha=175kg/7t/ha

5060%:

N182kg/ha P2O577kg/ha 2O88 kg/ha

(.4):

N0 kg/ha P2O532,5 kg/ha (1t 5kg=6,5t xkg) 2O130 kg/ha(1t 20kg=6,5t xkg)

7t/ha:

N182 0 =182kg/ha P2O577 32,5 =44,5kg/ha 2O88 130 = 42kg/ha

: N182kg/ha P2O544,5~ 45 kg/ha 2O0kg/ha

kg/t

N P2O5 K2O CaO MgO

26 13 22 5 4

` 24 12 26 6 4

22 14 23 8 3

28 12 29 6 4

26 11 25 6 8

4 2 6 2 1

35 30 55 62 5

51 28 51 52 10

70 15 28 28 7

60 15 35 30 6

58 15 35 22 5

66 15 35 18 6

67 17 36 16 7

62 15 30 25 5

28 7 18 29 3

28 5 18 20 5

5 2 8 3 1

14 2 14 3 -

3 1 4 4 -

3 1 3 1 -

3 1 4 5 -

4 2 4 1 -

2 1 5 1 -

2 1 3 1 -

3 1 4 3 -

1.

kg/t

N P2O5 K2O MgO

- 4,0 13,0 2,0

- 3,0 15,0 2,0

- 3,0 12,0 1,0

- 4,0 25,0 2,0

- 10,0 50,0 7,0

- 5,0 20,0 4,0

10,0 7,0 27,0 1,0

10,0 7,0 17,0 1,0

- 0,3 1,0 0,8

0,3 0,3 2,0 0,5

0,3 0,8 4,7 0,7

4. (BASF, 1991)

=/m2 (ha)/1000

=(%)(%)/100

=(kg)/100=(kg/ha)

600/2,35g,98%95%.

=600/m235g/1000 =21g/m2

21g/m2 10000=210000g/ha=210kg/ha

=98 95/100 =93,1%

=210kg/ha/93,1%x100=226kg/ha(93%)

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