棉蓬是生长在毛乌素沙地的一种最常见的野生植物。古往今来，它以其营养丰富，可供食用等特点，曾供成千上万的贫苦农民聊补无米之炊度过了许多个灾年荒月。在人们追求返朴归真，回归大自然的今天，农村里的一些老爷爷、老奶奶在吃白面、大米的同时，还经常吃一两块棉蓬窝头， Cotton canopies are one of the most common wild plants that grow in the Mu Us Sandlands. Throughout the ages, it has spent millions of years of famine on millions of poor peasants for its nutritious and edible features. In people’s pursuit of returning to simplicity, return to nature today, some grandfathers and grandmothers in rural areas eat white flour and rice, and often eat one or two pieces of cotton-