Recommended Plant Growth Regulators for Enhancing Fertilizer Utilization Efficiency

1. Compound Sodium Nitrophenolates (Atonik)
Atonik improves the absorption efficiency of nutrients such as nitrogen, phosphorus, and potassium; it also mitigates antagonistic interactions between fertilizers, thereby boosting fertilizer efficacy by over 30%.
When mixed with fertilizers such as urea or monopotassium phosphate, it significantly enhances the permeability and adsorption of foliar fertilizers.

2. Diethyl Aminoethyl Hexanoate (DA-6)
It enhances the plant's capacity to absorb water and nutrients, boosts photosynthetic activity, and promotes the accumulation of dry matter, thereby improving fertilizer utilization efficiency.

3. Fulvic Acid
When combined with urea, it forms a chelated complex that delays the decomposition of urea, raising its utilization rate from 30%–35% to 70%, with a sustained-release duration of 62–100 days.

4. Brassinolide
Although it possesses no nutritional value itself, it indirectly promotes root development and nutrient uptake by regulating endogenous hormones, thereby enhancing fertilizer utilization efficiency.

5. Polyaspartic Acid
Acting as a fertilizer synergist, it reduces chemical fertilizer loss and mobilizes soil nutrients, increasing the utilization rates of nitrogen, phosphorus, and potassium by 15.3%, 8.3%, and 10.7%, respectively; it can even allow for a reduction in chemical fertilizer application rates of 20%–30%.