also: チャンパとう
A historical variety of early-ripening rice originally from the Champa kingdom (present-day Vietnam), introduced to China and later to Japan.
Champa rice is an early-ripening rice variety that was widely cultivated in Song-dynasty China.
Mixed katakana-hiragana spelling; チャンパ is the katakana rendering of Champa.
From 占城 (Champa, an ancient kingdom in what is now Vietnam) + 稲 (rice plant). The reading せんじょうとう is the on'yomi of the kanji; チャンパとう uses the katakana rendering of 'Champa'.