noun
planted area; cultivated acreage
Refers to the total land area actually planted with crops, often used in agricultural statistics and reports.
今年の米の作付面積は昨年より減少した。
The planted area for rice this year decreased compared to last year.
耕地面積 refers to total arable land area, while 作付面積 specifically means the area actually planted with crops.
Compound of 作付 (さくづけ, 'planting') and 面積 (めんせき, 'area').