What are the classifications of seaweed fertilizer? What are the advantages?

Seaweed fertilizer refers to the biological fertilizer produced by fermentation, acid-alkali process or fertilizer mixing process using seaweed or seaweed extract as raw materials. There are three main functions, namely, improving soil, improving crop photosynthesis and improving crop stress resistance. What are the categories of seaweed fertilizer? What are the advantages?

What are the classifications of seaweed fertilizer?

Seaweed is rich in a variety of nutrients, including vitamins, polysaccharides, alginic acid, mannitol, betaine, highly unsaturated fatty acids, antibiotics and a variety of natural plant hormones. Seaweed has a simple biological structure and is convenient for processing and extracting active substances, so it has been widely used in agriculture and other fields. The classification of seaweed fertilizer in the agricultural material market is still not unified, and there are several common categories:

1. According to the proportion of nutrients, the liquid or powder is made by adding the nutrient elements needed by plants. According to its function, it can be divided into broad-spectrum type, high nitrogen type, high potassium type, anti-freezing type, disease-resistant type, growth regulation type, medium and trace element type, etc., suitable for all crops.

2. According to the physical state, it can be divided into liquid seaweed fertilizer, such as liquid foliar fertilizer and flushing fertilizer, and solid seaweed fertilizer, such as powdered foliar fertilizer, powdered flushing fertilizer and granular seaweed fertilizer.

3. Seaweed bacteria fertilizer, a product made by microbial fermentation directly using the residue extracted from seaweed or active substances in seaweed.

4. According to the additional active ingredients, it can be divided into seaweed fertilizer containing humic acid, seaweed fertilizer containing amino acid, seaweed fertilizer containing chitin, seaweed fertilizer containing rare earth elements and so on.

5. It is divided into foliar fertilizer according to the way of application. For foliar fertilization spraying; rush fertilization: for shallow surface root fertilization; seed soaking, seed dressing, dipping in root seaweed fertilizer: seaweed fertilizer dilutes a certain number of soaked seeds or seeds soaked in the shade can be sowed, seedlings transplant or cuttings are soaked with seaweed fertilizer, drip irrigation seaweed fertilizer is used as dropper fertilizer, granular, powdered and compound seaweed fertilizer is used as base fertilizer.

What are the advantages of seaweed fertilizer?

The active components in seaweed fertilizer can be easily absorbed and can be absorbed and transmitted very quickly after 2 to 3 hours of application. Seaweed fertilizer has the functions of promoting the formation of soil aggregate structure, loosening soil, increasing soil biological activity and accelerating the release rate of available nutrients, which not only does not produce residue on crops, but also does not cause soil pollution, so as to reduce the use of chemical fertilizer and reduce the negative impact on the ecological environment.

The main raw materials of seaweed fertilizer are natural seaweeds. At present, the algae that can be extracted are green algae, red algae and brown algae. The raw materials of seaweed fertilizer that we often see in the market are generally seaweed, Kunbu, kelp and sargassum. However, the classification of seaweed fertilizer is not unified in the market. Most seaweed fertilizers are mainly liquid and powder, and a few of them are in granular state.