In the field of seedling cultivation, the quality of nutrient soil directly determines the survival rate and growth trend of seedlings. High quality nutrient soil not only provides comprehensive nutrient supply for seedlings, but also improves soil structure and creates a loose and fertile environment for root growth. Based on years of practical experience, three universal nutrient soil formulas, combined with professional nutrient soil production line equipment, can achieve efficient and standardized nutrient soil preparation, safeguarding the healthy growth of various tree species. ​

Three classic nutrient soil formulas accurately meet the growth needs of seedlings. The first formula uses 1 cubic meter of ordinary cultivated soil as the base, with 100 kilograms of sheep manure, 50 kilograms of hemp residue (Youbing (Deep-fried round and flat dough-cake)) and 25 kilograms of 20% compound fertilizer. It has high nutrient concentration and is suitable for seedlings with high demand for fertility; The second formula adjusts the amount of organic materials and fertilizers, combining 1 cubic meter of cultivated soil with 50 kilograms of sheep manure, 10 kilograms of hemp residue, 10 kilograms of 20% compound fertilizer, and 3 kilograms of ammonium bicarbonate, balancing fertility and cost, and having a wider applicability; The third formula simplifies the ratio by mixing 85% cultivated soil with 10% sheep manure and 5% 20% compound fertilizer. It is easy to operate and suitable for large-scale seedling planting. Among them, sheep board manure can effectively loosen the soil and continuously release fertility. The 15% nitrogen fertilizer, 15% phosphorus fertilizer, and 15% potassium fertilizer contained in 20% compound fertilizer can fully meet the needs of seedling growth. Hemp residue can accelerate material fermentation and further improve the fertility level of nutrient soil.