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10 000 - 400 kg nawozów
1-x
x=0,04 kg nawozu
0,04-100%
x= 15%
x=0,006 kg=6 g azotu na 1m^2
10 000 - 400 kg nawozów
1-x x=0,04 kg nawozu
0,04-100% x= 15%
x=0,006 kg=6 g azotu na 1m²