How to Enhance Fertilizer Efficiency Using Plant Growth Regulators?

Plant growth regulators can enhance fertilizer efficiency in the following ways:

1. Promoting Nutrient Absorption:
Regulators such as fulvic acid can inhibit urease and nitrifying enzyme activity, reducing nitrogen fertilizer loss and increasing urea utilization by up to 70%. Simultaneously, fulvic acid can form complexes with phosphorus and potassium, reducing soil fixation and increasing phosphorus fertilizer utilization by 28%-39% and potassium fertilizer utilization by approximately 30%.

2. Improving Soil Environment:
Fulvic acid can regulate soil pH, loosen compacted soil, promote the reproduction of beneficial microorganisms, release fixed nutrients, and form aggregate structures to enhance root absorption capacity.

3. Synergistic Effects from Compound Formulations:
A 1:3 ratio of Sodium Nitrophenolates to Na-NAA can promote increased root number and robust root systems, resulting in a 15% increase in wheat yield; a combination of DA-6 and Ethephon can reduce corn plant height by 20%, providing both dwarfing and anti-premature aging effects. 

4. Reduced Fertilizer Usage and Costs
By improving fertilizer utilization, fertilizer usage can be reduced by 30%-50% while maintaining crop nutrient absorption efficiency. For example, fulvic acid, as a nitrogen fertilizer slow-release agent, slows down the decomposition of urea and prolongs its fertilizer effect.