Seaweed extract uses in agriculture In recent years, the damage caused by the blind and excessive application of chemical fertilizers and pesticides has become more and more serious. To develop ecological agriculture, we must vigorously promote the use of biological fertilizers and pesticides. The abundant marine biological resources are a material treasure house for the development of ecological agriculture. Seaweed extracts is one of the algae products from marine biological resources. It refers to seaweed extract powder/flakes, alginate oligosaccharide, seaweed extract liquid. They have many functions when applied to agricultural plants, including anti-oxidation and coordination of rapid distribution in plants, improve plant nutrient absorption, etc. Since the implementation of the green development requirements of agriculture and the implementation of the food security strategy, seaweed extract fertilizer series products have been increasingly favored by fertilizer companies and growers. As the leading manufacturer and exporter of seaweed extracts in China, Shandong Jiejing Group Corporation uses technology of cell wall cold breakage and countercurrent extraction to extract brown algae polyphenols from fresh sargassum. The production line adopts the world's advanced automated whole-line manufacturing equipment. As soon as the product is launched, it becomes popular product. It got highly appraised of contractors, fertilizer formulators and biostimulant company.