The soil of Tsochen's farmland is chalky, saline, low in organic matter and strongly alkaline (pH 8.5), but because of this the area's red bananas (Musa coccinea), Luzon bananas (M. basjoo), fragrant manjack (Cordia dichotoma), yams, bird's-nest ferns and mangoes are all especially tasty.
另外，左鎮鄉的耕地含有大量高鹽分的白堊土質，缺乏有機質，使得土壤呈鹼性反應 (酸鹼值高達 8.5)，但卻使得當地產出的紅香蕉、呂宋蕉、破布子、山藥、山蘇、芒果，特別香甜可口。