Machine-harvested cotton planting method

The invention discloses a machine-harvested cotton planting method, which comprises the following steps of: after previous wheat or rape is harvested, performing fertilization and compartment preparation, fixed-density sowing, mechanical intertillage and weeding, chemical control, topdressing, defoliation and ripening and harvesting in sequence; wherein the fixed-density sowing is 80 cm + 10 cm wide and narrow row planting or 90 cm equal row sowing; if planting is carried out according to wide and narrow rows, compartment opening is carried out at the depth of 180 cm, the width of compartment faces is 160 cm, the width of compartment ditches is 20 cm, the depth of the compartment ditches is 15-20 cm, four rows of cotton are planted on the compartment faces, the distance between the two middle rows is 80 cm, the distance between the two side rows is 100 cm, and the distance between the side rows and the middles of the compartment ditches is 40 cm; if equal-row planting is carried out, the compartment width is