Adjustable fine-seed precision direct-sowing machine used with mini-tiller

The utility model relates to an adjustable fine-seed precision direct-sowing machine used with a mini-tiller, which belongs to the field of agricultural machinery and is characterized in that a direct-sowing spacing adjuster is composed of a clutch transmission shaft, a clutch and a clutch operating lever, the clutch is composed of a duplex clutch sprocket, a clutch sleeve and a return spring, the clutch operating lever is connected with the clutch sleeve through a clutch shift fork to control engagement and disengagement of the clutch, the clutch sprocket at one end of the clutch transmission shaft is connected with an output sprocket of a drive shaft of the mini-tiller through a chain, a connecting sprocket in key connection with the other end of the clutch transmission shaft is connected with a seeder component through a chain, rotation speed can be changed to adjust spaces of direct-sowing seeds by changing the clutch sprocket, and direct-sowing line spacing can be adjusted by adjusting a sowing width adj