到目前为止，有100多名投资者和专家表达他们想与榆中县合作的意愿，他们有可行的方案可以重新利用这些废弃物，包括用它们来生产饲料和化肥。

Up to now, more than 100 investors and experts have expressed their will to cooperate with the county with feasible programs to reuse the waste, including producing feed and fertilizer with it.

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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.

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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.

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