1. Adjust the depth of the ditcher: by adjusting the depth of the ditcher, control the sowing depth and row spacing, thus affecting the sowing amount;

2. Adjust the number of seed metering devices: by increasing or decreasing the number of seed metering devices, the sowing amount of each seed metering device can be controlled, thus adjusting the sowing amount of the whole seeder;

3. Adjust the seed supply speed: by adjusting the seed supply speed, control the seed flow and sowing speed, thus affecting the sowing amount;

4. Adjust the rotation speed of the seeder: adjust the rotation speed of the seeder to control the sowing speed and the amount of seeds falling, thus affecting the sowing amount.