yán / jiū / fù / tiě / tǔ / de / xíng / chéng / guò / chéng / duì / nóng / yè / yǒu / zhòng / yào / yì / yì

研究富铁土的形成过程对农业有重要意义。

Studying the formation process of ferrosol is of great significance to agriculture.