《农桑辑要·典训·先贤务农》
春天和夏天，农人必须到田间劳动；秋天和冬天，督促百姓收刈入仓，增储果实、菱芡。
春夏不得不趣田亩；秋冬课收敛，益蓄果实、菱、芡。
During spring and summer, farmers were required to work in the fields. During autumn and winter, the people were supervised as they harvested and stored crops and increased their stock of fruit, water chestnuts, and lotus seeds.