Plant growth regulator is a classification of pesticides. It is artificially synthesized or extracted from microorganisms. It has the same or similar functions as plant endogenous hormones. It controls plant growth by chemical means and plays a role in the growth and development of crops. It has the same regulation, control, command, induction and other functions as endogenous hormones; it is one of the major advances in modern plant physiology and agricultural science, and has become an important symbol of the development level of agricultural science and technology. All physiological activities such as seed germination, rooting, growth, flowering, fruiting, aging, shedding, dormancy, and all life activities of plants are inseparable from their participation.

Five major plant endogenous hormones: gibberellins, auxins, cytokinins, abscisic acid, and ethylene. In recent years, brassinolides have been listed as the sixth category and have been accepted by the market. The top ten plant regulators in the production and application: ethephon, gibberellic acid, paclobutrazol, forchlorfenuron, thiadizuron, mepiperium, brassinolide, chlormequat, indole acetic acid, flumetriamine. In recent years, the company has focused on plant regulators: prohexadione calcium, furfuryl aminopurine, Sifengcycline, coronatin, S-induced antibiotics, etc. Companies participating in the competition More and more domestic pesticide companies have registered their plant-modified products, especially large-scale domestic formulation sales companies have entered the field of plant-regulated products. However, while the product is growing rapidly, whether the technical service can keep up with it, the usage and dosage of plant regulators can play a role of four or two in a specific growth period, which is completely different from the habit of increasing the dosage of insecticides and fungicides at will. It cannot be used as a foliar fertilizer. The healthy development of plant regulators requires the effective guidance of the government, the regulation of the industry, and the guidance and services of technical personnel. As long as it is a product with complete licenses and the correct method of use, it can effectively regulate the growth of crops, and truly increase the output of agricultural products while improving the quality. The mixed preparations of plant regulators are developing rapidly. At present, this type of compound has a large application market, such as: gibberellic acid + brassinolide, gibberellic acid + auxin + cytokinin, ethephon + brassica The compound preparations such as steroid lactones make the plant growth regulators with various functions complement each other. The market is gradually standardized, and spring is coming. The State Administration for Market Regulation and the National Standardization Management Committee have approved and issued a number of national standards for plant protection and agricultural materials, among which GB/T37500-2019 "High Performance Liquid Chromatography for the Determination of Plant Growth Regulators in Fertilizers" The release of the standard provides technical support for monitoring the illegal behavior of adding plant growth regulators to fertilizers. According to the "Pesticide Management Regulations", as long as pesticides are added to the fertilizer, the product is a pesticide and should be registered, produced, operated, used and supervised in accordance with pesticides. If the pesticide registration certificate is not obtained, it belongs to the pesticide produced without obtaining the pesticide registration certificate according to law, or the type of active ingredients contained in the pesticide does not match the active ingredients marked on the label and instructions of the pesticide, and it is determined to be a fake pesticide. The addition of plant regulators as hidden ingredients gradually converges, because the cost of illegal activities is getting higher and higher. Some informal and marginal companies and products in the market will eventually be eliminated. This blue ocean of plant conditioning is attracting contemporary farmers to explore, and his spring may really come.