noun
field burning; burning stubble and dry grass
Agricultural practice of burning crop residue and dry grass in fields, often to clear land or return nutrients to the soil.
春先に畑焼きをして、土を肥やす農家もいる。
Some farmers burn their fields in early spring to enrich the soil.
畑焼きの煙が遠くから見えた。
Smoke from the field burning could be seen from afar.
野焼き refers to burning of wild fields or grasslands, often for land management, while 畑焼き specifically refers to burning in cultivated fields.
Compound of 畑 (hatake, 'field') and 焼き (yaki, 'burning').