... , specific gravity: 1.10-1.15Main ingredient:Alginic acid≥20 g/L, organic matter≥100 g/L, ... .5 g/L, K2O≥60 g/L, amino acid≥10 g/L, I≥200ppm; much secondary element ... and microelements, cytokinin, betaine, vitamine, trehalase, amino acid.Efficacy:Supply organic nitrogen, increase soil fertility, enhance crop ... ha.The crops with one picking: To spray 3~4 times in whole growing period.The crops with ...