You want to make more and more people jobless?

Nope it's a mere substitution. Farmers with land will become landlords. Farmers without land can be become engineers.

What are you going to do for food? You can't expect other states to feed your people.

We can trade with them to obtain agricultural products in return for industrial finished goods or services

The state economy will take a deep deep dive if you stop the agricultural industry

The state spends more money on agriculture that it actually obtains from it. IE net value of agriculture is negative.

And who is going to buy all the lands?

Renting or leasing the lands to industries works