Water-soluble Fertilizer
Water-soluble fertilizer refers to a compound fertilizer that contains nitrogen, phosphorus, potassium, calcium, magnesium, trace elements, amino acids, humic acid and alginic acid that can be completely dissolved in water. How many kinds of water soluble fertilizer we have now?
From the shape of the fertilizer, the Water soluble fertilizer is divided into two kinds: solid water soluble fertilizer and liquid water soluble fertilizer. For the Nutrient content, the fertilizer will be Macronutrient water-soluble fertilizer, water-soluble fertilizer in an amount of trace elements, water-soluble fertilizer containing amino acids, water-soluble fertilizer containing humic acid, containing organic water-soluble fertilizer. water-soluble fertilizer containing amino acids is divided into a large number of elemental and trace element type. ater-soluble fertilizer containing humic acid is divided Trace elements and calcium elements.
The different kind of the water-soluble fertilizer have the different kind of stander:
Macronutrient water-soluble fertilizer(Medium element type)
| Item | Solid fertilizer | Liquid Fertilizer | |
| Macronutrient content a | ≥ | 50.0 | 500 |
| Medium elements content b | ≥ | 1.0 | 10 |
| Water insoluble content | ≤ | 5.0 | 50 |
| PH（1∶250 dilution） | 3.0~9.0 | ||
| Water (H2O), % | ≤ | 3.0 | / |
| A Macronutrient content is the total content of N, P2O5, K2O. The product need have at least 2 kinds of macronutrient. The single macronutrient need no less than 4.0% (40g/L)
B Medium elements content is the total content of the Calcium and magnesium elements. The product need have atleast 1 kind medium elements. The content more than 0.1% (1g.L) should consider to the medium elements.. |
|||
Macronutrient water-soluble fertilizer(Microelement type)
| Item | Solid fertilizer | Liquid Fertilizer | |
| Macronutrient content a | ≥ | 50.0 | 500 |
| Micro elements content b | 0.2~3.0 | 2~30 | |
| Water insoluble content | ≤ | 5.0 | 50 |
| PH（1∶250 dilution） | 3.0~9.0 | ||
| Water (H2O), % | ≤ | 3.0 | / |
| A Macronutrient content is the total content of N, P2O5, K2O. The product need have at least 2 kinds of macronutrient. The single macronutrient need no less than 4.0% (40g/L)
B The microelement content is the total content of the Copper, iron, manganese, zinc, boron, molybdenum. The product should have at least have 1 kind of microelement. The content more than 0.05% (0.5g/L, should consider to the microelement. The molybdenum should no more than 0.05% (0.5g/L) |
|||
water-soluble fertilizer in an amount of trace elements
| Item | Solid fertilizer | Liquid Fertilizer | |
| Medium elements content | ≥ | 10.0 % | 100 g/L |
| Water insoluble content | ≤ | 5.0 % | 50 g/L |
| PH（1∶250 dilution） | 3.0-9.0 | 3.0-9.0 | |
| Water (H2O), % | ≤ | 3.0 % | – |
| Medium elements content is the total content of the Calcium and magnesium elements. The product need have atleast 1 kind medium elements. The content more than 0.1% (1g.L) should consider to the medium elements.Sulfur content is not included in the content of the weight element, only marked in the logo. | |||
water-soluble fertilizer containing humic acid
| Macronutrient Content Type | |||
| Item | Solid fertilizer | Liquid Fertilizer | |
| Humic acid | ≥ | 3.0% | 30 g/L |
| Macronutrient content | ≥ | 20.0% | 200 g/L |
| Water insoluble content | ≤ | 5.0 % | 50 g/L |
| PH（1∶250 dilution） | 4.0-10.0 | 4.0-9.0 | |
| Water (H2O), % | ≤ | 5.0 % | – |
| Macronutrient content is the total content of N, P2O5, K2O. The product need have at least 2 kinds of macronutrient. The single macronutrient need no less than 2.0% (20g/L) | |||
| Microelement type | |||
| Item | Solid fertilizer | ||
| Humic acid | ≥ | 3.0 % | |
| Microelement content | ≥ | 6.0 % | |
| Water insoluble content | ≤ | 5.0 % | |
| PH（1∶250 dilution） | 4.0-10.0 | ||
| Water (H2O), % | ≤ | 5.0 % | |
| The microelement content is the total content of the Copper, iron, manganese, zinc, boron, molybdenum. The product should have at least have 1 kind of microelement. The content more than 0.05% (0.5g/L, should consider to the microelement. The molybdenum should no more than 0.05% (0.5g/L) | |||
water-soluble fertilizer containing amino acids
| Microelement type | |||
| Item | Solid fertilizer | Liquid Fertilizer | |
| Free amino acid content | ≥ | 10.0 % | 100 g/L |
| Microelement content | ≥ | 2.0 % | 20 g/L |
| Water insoluble content | ≤ | 5.0 % | 50 g/L |
| PH（1∶250 dilution） | 3.0-9.0 | 3.0-9.0 | |
| Water (H2O), % | ≤ | 4.0 % | – |
| The microelement content is the total content of the Copper, iron, manganese, zinc, boron, molybdenum. The product should have at least have 1 kind of microelement. The content more than 0.05% (0.5g/L, should consider to the microelement. The molybdenum should no more than 0.05% (0.5g/L) | |||
| Medium elements content | |||
| Item | Solid fertilizer | Liquid Fertilizer | |
| Free amino acid content | ≥ | 10.0 % | 100 g/L |
| Medium elements content | ≥ | 3.0 % | 30 g/L |
| Water insoluble content | ≤ | 5.0 % | 50 g/L |
| PH（1∶250 dilution） | 3.0-9.0 | 3.0-9.0 | |
| Water (H2O), % | ≤ | 4.0 % | – |
| Medium elements content is the total content of the Calcium and magnesium elements. The product need have atleast 1 kind medium elements. The content more than 0.1% (1g.L) should consider to the medium elements. | |||
Microelement water-soluble fertilizer
| Item | Solid fertilizer | Liquid Fertilizer | |
| Microelement content | ≥ | 10.0 % | 100 g/L |
| Water insoluble content | ≤ | 5.0 % | 50 g/L |
| PH（1∶250 dilution） | 3.0-10.0 | 3.0-10.0 | |
| Water (H2O), % | ≤ | 6.0 % | – |
| The microelement content is the total content of the Copper, iron, manganese, zinc, boron, molybdenum. The product should have at least have 1 kind of microelement. The content more than 0.05% (0.5g/L, should consider to the microelement. The molybdenum should no more than 0.05% (0.5g/L) (Single – quality molybdenum microelement products are excluded) | |||
Water soluble fertilizer mercury, arsenic, cadmium, lead, chromium limit
| Item | Target | |
| Mercury (Hg) (as element) | ≤ | 5 |
| arsenic（As）(as element) | ≤ | 10 |
| Cadmium（Cd）(as element) | ≤ | 10 |
| Lead（Pb）(as element) | ≤ | 50 |
| Chromium（Cr）(as element) | ≤ | 50 |
Different kind of product have the different stander, hope every one can choose the right fertilizer according the standers. Find the good supplier and products.
