NOVELTY - Cultivating sugarcane comprises growing sugarcane at different times and pouring different growth regulator, the method comprises e.g. (i) during dividing tillering stage of sugarcane root, pouring 100-200 kg/acre first growth regulator once in a month, (ii) during elongation period pouring 200-400 kg/acre second growth regulator thrice a month, and (iii) during mature sugarcane root period pouring 100-200 kg/acre third growth regulator once in a month.    USE - The method is useful in cultivating sugarcane (claimed).    ADVANTAGE - The method: increases yield and sugar content of sugarcanes; improves soil structure and soil fertility; promotes growth; avoids chemical fertilizer employment; is economical and environmentally friendly.    DETAILED DESCRIPTION - Cultivating sugarcane comprises growing sugarcane at different times and pouring different growth regulator, the method comprises (i) during dividing tillering stage of sugarcane root, pouring 100-200 kg/acre first growth regulator once in a month, where preparing the first growth regulator comprises taking 1-5 pts. wt. nitrogen-fixing bacteria, 3-5 pts. wt. phosphate bacteria and 5 pts. wt. water, soaking for 5 hours, adding 200 pts. wt. water, stirring until evenly mixed, adding 0.5 pts. wt. potassium chloride, 2-4 pts. wt. superphosphate, 0.1-0.3 pts. wt. zinc chloride, 0.3-0.5 pts. wt. boric acid and 1-2 pts. wt. urea, and stirring evenly to mix well, (ii) during elongation period pouring 200-400 kg/acre second growth regulator thrice a month, where preparing the second growth regulator comprises taking 3-5 pts. wt. antibiotic bacteria, 10-15 pts. wt. nitrogen-fixing bacteria, 6-10 pts. wt. mycorrhizal fungi, 4-8 pts. wt. silicate bacteria, 6-10 pts. wt. yield increasing bacteria and 10 pts. wt. water, soaking for 8 hours and adding 300 pts. wt. water, stirring until evenly mixed, adding 1 pts. wt. potassium chloride, 5-8 pts. wt. superphosphate, 0.3-0.5 pts. wt. ferrous sulfate, 0.5 pts. wt. zinc chloride, 0.8-1.2 pts. wt. boric acid, 0.6-1 pts. wt. magnesium sulfate, 0.4-0.6 pts. wt. manganese sulfate and 2-3 pts. wt. urea and stirring to mix, and (iii) during mature sugarcane root period pouring 100-200 kg/acre third growth regulator once in a month, where preparing the third growth regulator comprises 5-10 pts. wt. nitrogen-fixing bacteria, 3-5 pts. wt. phosphorus bacteria and 6 pts. wt. water, soak for 5 hours, adding 200 pts. wt. water, stirring until evenly mixed, adding 0.5 pts. wt. potassium chloride, 1-3 pts. wt. superphosphate and 1-3 pts. wt. urea and stirring to mix.