Millet seeding quantity adjusting and controlling method

The invention discloses a millet seeding quantity adjusting and controlling method which aims to achieve the purposes of being low in cost, simple in technology and high in operability. The method includes the steps that a wheat rotary tillage, seeding and compacting all-in-one machine is used for sowing millet, and the seeding quantity of the millet is adjusted and controlled; a seed discharging box cover A and a seed discharging box cover B of a trapezoid structure are manufactured first; the lower bottom face of each box cover is small and the upper bottom face of each box cover is large; a seed discharging hole penetrating through the upper bottom face and the lower bottom face is formed in the middle of one side of the seed discharging box cover A; the seed discharging box cover A covers a seed discharging box used for sowing and discharging seeds in a seed box of the wheat rotary tillage, seeding and compacting all-in-one machine, and the seed discharging box cover B covers a seed discharging box in which seed sowing and discharging are not needed; the seeding quantity, the seeding line spacing and the seeding line number are determined according to the two modes of spring seeding of large groups and wheat stubble remedy aerial seeding of large groups; then the seeding quantity W needed in certain area is calculated according to the formula of W=[(M/666.7)*(b*a*pi*d*n)]*0.75; when a seed discharging wheel is adjusted to adjust the seeding quantity to be a needed seeding quantity, a seed discharging shaft adjusting valve and a hoop are locked, and the seeding quantity is prevented from being changed in the operating process.