However, for vegetables often the whole plant is consumed; moreover, the growing period is short, and each household plants and harvests at different times, so it is not like rice where each planting season can be clearly differentiated. Once vegetables are cut or picked, they can be sold within a day, so it is virtually impossible to control their flow.
蔬菜卻常是食用全株，且它的收穫期短、每戶農家栽種與收成時間不一，不似稻作生長期一季季來的分明，蔬菜一割，一天就賣完，不易控制流向。