蒋海宏是中国西北甘肃省榆中县的一名菜农。
Jiang Haihong is a vegetable farmer in Yu Zhong county, in northwestern Gansu Province.
然而，榆中县受制于自身的气候，限制了他们蔬菜经济的扩大。
Yet the county is restrained by its climate that limits the vegetable economy from scaling up.
榆中县副县长Pei Wanjiang称：“一百万吨的蔬菜废弃物可以生产出10万吨的饲料，低投入高回报。”
Pei Wanjiang, deputy head of Yuzhong county, said, "One million tons of vegetable waste can produce 100 thousand tons of feed, a good profit with a low cost."
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