2Seaweed fertilizer contains a large number of disease-resistant factors and special components, with double effects of fertilizer and medicine. The resistance of crops to disease increased significantly after application, and foliar spraying could improve the effect of pesticide.
Seaweed fertilizer contains seaweed polysaccharides and oligosaccharides, mannitol, phenolic polymer compounds, betaine, alginate and natural materials such as antibiotics, has significant antibacterial antivirus, insect repellent effect, really fat medicine effect, has been a sharp increase in crop of cold resistance, drought resistance, disease resistance, lodging resistance, salt resistance, to blight, anthrax, virus disease, downy mildew, grey mildew, powdery mildew, have strong resistance to blight, etc. In addition, alginic acid in seaweed fertilizer can reduce the surface tension of water, form a layer of film on the surface of plants, increase the contact area, and make water-soluble substances more easily enter plant cells through the cell membrane on the surface of stems and leaves, so that plants can most effectively absorb the nutrients in the seaweed extract. If algal fertilizer and insecticide, bactericide are mixed, have synergistic effect, can reduce spraying cost.