How do you bring up the food supply in shogun 2?

In Shogun 2: Total War, you can improve your food supply by building and upgrading agricultural buildings such as farms and rice fields in your provinces. Additionally, developing trade routes with other factions can help increase your food resources. It's also crucial to manage your population growth and ensure that your provinces are not overpopulated, as this can lead to food shortages. Finally, maintaining a balanced economy and investing in technologies that enhance agricultural output will further boost your food supply.