planter; seeder; seed drill
A machine for sowing seeds; used in agricultural contexts.
この農家は新しい種まき機を導入した。
This farm introduced a new planter.
Standard kanji spelling for a seed-planting machine.
Alternate kanji spelling using 播く instead of 蒔く; less common but still seen.
Compound of 種 (seed), まき (stem of 蒔く/播く, to sow), and 機 (machine).