According to Zhang Peitong, an expert in cotton cultivation at the Jiangsu Academy of Agricultural Sciences, there are mainly three types of soilless methods for cotton seedlings. The first is the matrix seedling technology researched by the Cotton Research Institute of China Academy of Agricultural Sciences. This technology uses specialized substrates, fertilizers, root-removing agents and leaf-retaining agents to cultivate cotton seedlings. The cotton seedlings cultivated by this seedling raising method can be transplanted to naked seedlings. The second is the industrialized soilless seedling technology researched by Nanjing Red Sun Group. The technology is to use a dedicated nursery tray, vermiculite or river sand and other substrates and special nutrient solution, rooting agents, leaf protection agents and other products concentrated large-scale cultivation of cotton seedlings, cotton seedlings cultivated by this way can also be naked Transplanting seedlings. Third, the water floating seedling technology researched by Hunan Agricultural University. The technology is the use of special foam seedling trays, substrates, fertilizers and nutrient solution, and the nursery tray (floating) on ​​the nutrient solution seedlings, the cotton seedlings cultivated with this seedling method need to be transplanted with the matrix. The use of all-element water-soluble compound fertilizer to prepare plant growth nutrient solution should pay attention to the following points. First of all, all-element water-soluble compound fertilizer has a special formula according to different plants. When using it, it is necessary to pay attention to the applicable crop of the product. Second, specific nutrients should be added based on the nutrient introduction of all-element water-soluble compound fertilizers and the needs of crops. Again, to be diluted with water in strict accordance with the instructions, the concentration should not be too large. Fluorinecompounds has good application prospect and huge market potential . In addition to developing our more popular series of fluorine-containing acid fluoro- Containing Benzaldehyde series ,fluoro-Containing Benzonitrile series , Fluorine-Containing Methylbenzene , Fluorine-Containing Phenol, Fluorine-Containing Anisole and other fluorine-containing compounds . Since we started late in this area , our other types of fluorine compounds has limited accumulate, so we temporarily classified fluorine-containing compounds which more than 30 the number as other fluorine-containing compound series. Currently our other fluorine-containing compounds is not in huge numbers , but it covered all various types. we have our originality of some products.. According to our own technical expertise, we developed creative process with a strong competitive advantage. April showers bring May flowers, The treasured sword front from whets, plum blossom fragrant from bitter cold. We will continue to break through and beyond ourselves , and strive to become leader in fluorine industry . Fluorinecompounds,Methoxyacetophenone,Difluoronitrobenzene Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com