《管子·匡君小匡》
在天气尚冷的时候。就铲除杂草修整土地，以待时而耕，耕得深，种得均，盖土又快。
及寒击槁除田，以待时乃耕，深耕、均种、疾耰。
When the weather is still cold, they weed and level the land and wait for the right time to plough, plough deeply, sow evenly, and cover quickly.