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我国蚕桑生产的历史十分悠久。蚕业，在我国黄河流域和长江流域经历了盛衰的演变、重心的转移和新种植区域的开辟。与之相伴而生的养蚕缫丝技术，传播到世界各地。这是中华文明对世界文明的突出贡献。接下来，我们将用10节课的内容，为你介绍我国蚕业发展的过程，以及养蚕缫丝技术的传播发展。
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