20-20-20 compound fertilizer is a balanced fertilizer with a 1:1:1 ratio of nitrogen, phosphorus, and potassium. Its core function is to provide crops with stable and comprehensive nutrition, preventing uneven growth due to nutrient deficiencies. The optimal application timing should be determined in conjunction with the crop’s nutrient requirements during its growth stages.  Using standardized products produced through a regulated NPK fertilizer production line and granulation technology will yield better results.

The seedling stage to the rapid growth stage is the critical time. During the seedling to tillering/branching stage of field crops and fruits and vegetables, the roots and stems and leaves grow simultaneously, requiring a balanced supply of nitrogen, phosphorus, and potassium. Application at this time promotes strong root development and even stem and leaf growth, preventing weak or leggy seedlings and laying the foundation for balanced fruiting later.

Apply a supplementary dose 10-15 days before the flowering and fruiting period to ensure continuous nutrient supply. This supplementary fertilization meets the needs of flower bud differentiation and fruit setting, preventing nutrient imbalances that lead to flower and fruit drop and uneven fruit setting, and reducing the occurrence of small, large, and deformed fruits.

Cleverly supplement during later stages of nutrient deficiency to maintain even growth. If crops show yellowing leaves and slowed growth, a small supplementary application can alleviate nutrient deficiency, preventing polarized plant growth and maintaining healthy stems and leaves.

Note: Avoid excessive application during flowering and peak fruiting periods to prevent root burn. Apply in conjunction with watering, and mix with organic fertilizer using a fertilizer mixer to enhance effectiveness; choose products from a reputable NPK fertilizer production line using standardized NPK compound fertilizer granulation technology to ensure balanced nutrients and stable quality.