How to use plant growth regulators for flowers and trees

Plant growth regulators play an important role in regulating the growth of flowers and plants, preventing overgrowth, promoting rooting, cultivating strong seedlings, controlling sex differentiation, preventing flowers and fruits from falling, enhancing resistance, storage and preservation and so on. However, the use methods of different plant growth regulators vary according to the types of agents, application objects, purposes, plant growth status and climatic conditions, so attention should be paid to reasonable selection in practice. Seed mixing method and seed coating method are mainly used for seed treatment. When treating seeds with fungicides, pesticides and micro-fertilizers, plant growth regulators can be added appropriately. The seed mixing method is to mix the medicine with the seed, so that the appearance of the seed is stained with the medicament, such as spraying the agent on the seed with a sprayer, stirring evenly and sowing the seed. The seed coating method uses a special dosage form of seed coating agent to wrap it around the seed to form a film with a certain thickness, which can not only promote seed germination, but also achieve the purpose of preventing diseases and insect pests, increasing mineral nutrition and regulating plant growth. Soaking method is often used to promote rooting, seed treatment, storage and preservation of cuttings, such as woody cuttings with leaves, placed in 5 to 10 ml / L indolebutyric acid, soaked for 12 to 24 hours, directly inserted into the seedbed. Can also be used fast dipping method, naphthalene acetic acid and talcum powder according to 1 g: 1000 grams mixed evenly, the lower part of the cuttings soaked with water, and then dipped in a little powder cutting in the seedbed. The spraying method is prepared into the corresponding concentration spraying plant according to the need, and the liquid droplets are required to be small and uniform, with the wetness of the spraying site as the degree. In order to make the agent easy to adhere to the plant surface, a little emulsifier, such as washing powder or surfactant and other auxiliaries, can be added to the agent to increase the adhesion of the agent. When spraying, spray on the upper and middle branches of the plant as far as possible. In the irrigation method, the plant growth regulator is mixed into an aqueous solution, which is directly poured into the soil or mixed with fertilizer, so that the root can be fully absorbed. If potted flowers, the amount of solution required depends on the size of the plant and the basin, generally 9 to 12 cm caliber pot needs 200 to 300 milliliters. In order to promote plant flowering and control the elongation and growth of plant stems and branches, 0.1% to 0.3% succinic acid and dwarf acid aqueous solution can be used to irrigate. When the smear method is treated with lanolin, the lanolin containing medicine is smeared directly on the treated site, mostly on the wound, which is conducive to promoting rooting and smearing. The high-altitude striping incision smearing method can be used for the reproduction of valuable and difficult-to-root flowers. The method is to ring-cut the branches to expose the phloem, smear the lanolin containing auxin on the cut, keep it moist with moss, and wrap it with a thin film to prevent water evaporation.