《天工开物·上篇·乃服》
棉花都是春天种下，秋天结棉桃，先裂开吐絮的棉桃先摘回，而不是所有的棉桃同时摘取。
凡棉春种秋花，花先绽者逐日摘取，取不一时。
Cotton was planted in the spring and produced cotton bolls in the autumn. The cotton bolls that first burst open were first picked back, rather than picking all the cotton bolls at the same time.