The invention discloses a cultivation method of sympodial bamboos used for producing high-
cellulose-content fibers. The cultivation method of the sympodial bamboos used for producing the high-
cellulose-content fibers comprises the following steps: preparing a compound solution used for adjusting and controlling a
cellulose content of the sympodial bamboos, wherein the compound solution comprises the following components: polypeptide
urea with a concentration of 5-20 mg / L, a
gibberellic acid (GA3) with a concentration of 5-15 mg / L, 2-diethylaminoethyl hexanoate with a concentration of 15-25 mL / L,
potassium dihydrogen
phosphate with a concentration of 80-120 mg / L, Zn(NO3)2.EDTA with a concentration of 8-12 mg / L,
sodium molybdate with a concentration of 0.1-0.2 mg / L and MgSO4.7H2O with a concentration of 30-60 mg / L, and a pH value of the compound solution is 6-6.5; adjusting the basic
soil fertility through fertilization; and planting 40 sympodial bamboos per mu according to spacing in rows and spacing between the rows of 4*4 m, and keeping 10-15 annual or biennial bamboos of each sympodial bamboo. According to the cultivation method of the sympodial bamboos used for producing the high-cellulose-content fibers, cultivation of a sympodial bamboo
raw material used for high-quality fibers is regarded as the purpose, operation is simple, the bamboos grow fast, the bamboo cellulose content is high, the cellulose content of the biennial bamboos is, on average, 14.1% higher than that of untreated controls, and directional cultivation of a bamboo forest used for the high-quality fibers can be achieved.