How do vegetables use plant growth regulators?

How do vegetables use plant growth regulators? Please give guidance on the application of plant growth regulators to vegetables can refer to the following methods: 1. According to the purpose of use, to determine the appropriate concentration of plant growth regulators should use different concentrations according to the purpose of use, different types of vegetables and different periods. When regulating plant growth and development, each plant growth regulator has a suitable concentration. Even if the same growth regulator is used at different concentrations, it often plays a different role. Arbitrarily increasing or decreasing the concentration will affect the physiological effects of plant hormones. For example, spraying 150 × 10 ~ 6 ethephon solution at cucumber seedling stage can induce female flower differentiation and increase early yield, if the concentration increases to 1000 × 10 ~ 6. Will kill the male flower. 2. According to the different periods of vegetable growth and development, the appropriate spraying period of different periods of vegetable growth and development, the response to plant growth regulators is very different, only in the appropriate growth period, can achieve the desired effect. If tomato seedlings are treated with paclobutrazol to inhibit their growth, if the treatment is early and easy to cause drug damage because the plants are tender, if the treatment is too late, it will not achieve the desired effect, and the appropriate treatment period is the 5-6 leaf stage of tomato seedlings. 3. According to different growth regulators, it is very important to choose the appropriate use method of plant growth regulators with high physiological activity and small dosage, so it is very important to apply them accurately and evenly, otherwise it will cause too much local medicine and cause drug damage. The commonly used plant growth regulators are water agent, powder and EC. Those that can be directly soluble in water can be directly prepared and applied according to their required concentration and dosage, but they must be used now; for those that are not directly soluble in water, 90% can be dissolved first and then diluted with water. When applying plant growth regulators according to the treatment period, such as spraying, watering roots, dipping flowers, soaking roots, etc., which method can be used flexibly according to the situation, so that the efficacy can be brought into full play and the operation is simple. For example, spraying is suitable for the treatment of tender leaves and buds at seedling stage, and dipping flowers are generally used to prevent falling flowers and fruits at flowering stage to promote ovary development. The use of plant growth regulators must be based on improving cultivation conditions, cooperate with various cultivation techniques, strengthen water and fertilizer management, and make plants under good cultivation conditions in order to give full play to its role. Click to get more regulator application techniques click to get more pesticide application techniques