I think these are eggplants, also ready to be planted in the fields.
Here they are laying the plastic in the fields before they plant. The plastic helps keep the weeds out and allows them to water the plants by drip irrigation and add fertilizer to the soil as needed. (in my not so professional opinion)
After the plastic is down, they have to pull back the white part (which will be the tunnel), put wire rims up (to make the tunnels) and poke holes in the plastic where the plants will go. Actually I think they poke the holes first.
I took this picture this morning. I can't believe how big the plants are now. Here's a view from inside the tunnel.As it gets warmer and the plants get bigger they will start to open the tunnels up more.