To explore the effect of spraying trinexapac-ethyl and brassinolide on sugarcane growth and provide data support for increasing sugarcane yield.
Method: Trinexapac-ethyl and brassinolide were made into ultra-low volume preparations, and single-rotor ultra-low volume spray aircraft was used to spray sugarcane at the early stage of tillering.

In the early stage of wheat flowering, combined with the prevention and control of fusarium head blight, spraying 0.01% brassinolide emulsifiable concentrate 20 mL/667 m~2 + cyanobacterium 100 mL/667 m~2 + tebuconazole 20 mL/667 m~2 can promote wheat growth and development, increase wheat fruit setting rate, and increase yield by 9%.

Paclobutrazol is a plant growth regulator that has multiple functions such as delaying plant growth, promoting tillering and increasing plant stress resistance. In rapeseed cultivation, the rational use of paclobutrazol can not only effectively improve the resistance of rapeseed to lodging, but also significantly improve the yield and quality of rapeseed.

Cotton plant growth regulators are classified into categories such as stress resistance, rooting, inhibition and promotion of growth, drying and defoliation, and synergists. They are used both alone and in combination.