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How much does it cost to grow vegetables in a greenhouse on an acre of land? How much can you harvest?

Take leek as an example, the first investment is about 7,000 yuan, with 20 kilograms of seeds per mu, chemical fertilizer (500 yuan), pesticide (500 yuan), plastic film (/kloc-0.5 million yuan), grass curtain (3,000 yuan) and land rent (/kloc-0.0 million yuan). (excluding the cost of scaffolding) The annual income per mu is 20,000 yuan.