《农桑辑要·蚕事预备·收干桑叶》
《务本新书》：秋末，桑叶还没有变黄的时候，应该想办法多收集一些，并且要即时晒干捣碎，贮放在没有烟火的地方。
《务本新书》：秋深，桑叶未黄，多广收拾，曝干，捣碎，于无烟火处收顿。
"New Book of Essentials": In late autumn, when the mulberry leaves have not yet turned yellow, you should try to collect more, and you should dry and crush them immediately, storing them in a place where there is no smoke or fire.