后因人口增加，适于菰草生长的生境遭到破坏，葑田的利用渐趋消失，南方一些地方改用芦苇编制成筏，用来种植蕹菜（空心菜），沿用至今。
Because of a rapid increase of population in South China thereafter , the habitat that zizania grown had broken-down quickly by openning up cultivated land along the edge of lakes and rivers .
葑田