Trinexapac-ethyl belongs to the cyclohexanedione plant growth regulator, a gibberellins biosynthesis inhibitor, which controls the vigorous growth of plants by reducing the content of gibberellins. Trinexapac-ethyl can be quickly absorbed and conducted by plant stems and leaves, and plays an anti-lodging role by reducing plant height, increasing stem strength, promoting the increase of secondary roots, and developing a well-developed root system.

Paclobutrazol is an agricultural agent that can weaken the top growth advantage of plants. It can be absorbed by crop roots and leaves, regulate plant nutrient distribution, slow down growth rate, inhibit top growth and stem elongation, and shorten internode distance. At the same time, it promotes flower bud differentiation, increases the number of flower buds, increases the fruit setting rate, accelerates cell division

The mixing of plant growth regulators and fungicides depends on the mechanism of action of the agents, systemic conductivity, complementarity of the objects of control, and whether antagonism will occur after mixing. In some cases, such as to achieve the purpose of disease prevention or enhance plant disease resistance, promote plant growth or cultivate strong seedlings

Naphthalene acetic acid (NAA) is an auxin plant regulator. It enters the plant body through leaves, tender epidermis and seeds, and is transported to the parts with vigorous growth (growth points, young organs, flowers or fruits) with nutrient flow, significantly promoting the tip development of the root system (rooting powder), inducing flowering, preventing falling flowers and fruits, forming seedless fruits, promoting early maturity, increasing production, etc. It can also enhance the plant's ability to resist drought, cold, disease, salt and alkali, and dry hot winds.