《天工开物·上篇·乃服》
桑树经过剪枝之后，新生枝条一个月后就会长出许多叶子，枝条也就很茂盛了，而且还便于采摘。
剪枝之法，再生条次月叶愈茂，取资既多，人工复便。
After the pruning of the mulberry tree, many leaves will grow on the new branches after a month, and the branches will be very lush, which is also convenient for picking.