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specification:
total nitrogen≥31%
nitrate nitrogen ≥7.5%
ammonium nitrogen ≥7.5%
amide nitrogen ≥16%

specification:
total nitrogen≥30%
nitrate nitrogen ≥7.5%
ammonium nitrogen ≥7.5%
amide nitrogen ≥15%
ph（diluted 1 ：250）：5.5-7
water insoluble ≤0.5%；
b, zn, mg, fa

npk (g/l) 350-100-50
specification:
n p2o5 k2o≥500g/l
n≥350g/l ;p2o5≥100g/l ;k2o≥50g/l
mg ≥ 8g/l ; b ≥ 3g/l ； zn ≥ 2g/l

npk (g/l) 190-190-190
specification:
n p2o5 k2o≥570g/l
n≥190g/l ;p2o5≥190g/l ;k2o≥190g/l
mg ≥ 8g/l ; b ≥ 3g/l ； zn ≥ 2g/l

npk (g/l) 140-400-60
specification:
n p2o5 k2o≥600g/l
n≥140g/l ;p2o5≥400g/l ;k2o≥60g/l
mg ≥ 8g/l ; b ≥ 3g/l ； zn ≥ 2g/l

npk (g/l) 0-400-500
specification:
n p2o5 k2o≥900g/l
p2o5≥400g/l ;k2o≥500g/l
b ≥ 3g/l ； zn ≥ 2g/l

npk (g/l) 150-0-110
ca mg≥180g/l
specification:
n ≥ 150g/l； k2o ≥ 110g/l；
ca ≥ 150g/l ; mg ≥ 30g/l ;