Chinese Farms
By far, the biggest farm in the world (in terms of acreage) is the Mudanjiang City Mega Farm in Heilongjiang, China. This astounding farm manages 22,500,000 acres. The Mudanjiang City Mega Farm specializes in dairy and has around 100,000 cows. For reference, that is 50 times bigger than the largest dairy farm in Europe. Its expansion happened in 2015 as a response to the Russian ban on dairy products from the EU. China has stepped up to fulfill that need.
The second largest farm in the world is also situated in China. The Modern Dairy is located in Anhui and has an area of 11,000,000 acres which is about half the size of the Mudanjiang farm. This farm began in 2011 and at that time was the largest farm in the world with 40,000 cows. By 2014, Modern Dairy suffered market losses as it was accused of having sold bovine tuberculin positive cows.
This is an extract from
https://www.worldatlas.com/articles/biggest-farms-in-the-world.html