Subsistence agriculture is a simple, often organic, system using saved seed native to the ecoregion combined with crop rotation or other relatively simple techniques to maximize yield. Here is the same text in Chinese (Traditional):
自給自足式農業是一種單純的農業系統，通常採行有機耕種，保留並使用當地生態區原生作物的種子，採用輪作或其他相對簡單的技術來增加產量。