Can white fungus grow in rice fields after autumn harvest be eaten?

When I was a child, I often looked for mushrooms, white mushrooms and thick meat in the fields where rice was cut. Stir-fried food is especially delicious. At that time, I was worried that this mushroom would be poisonous or inedible. Later, according to the book, poisonous mushrooms are usually colored and gray or white, so I tried to fry them. I found them delicious and not poisoned, so everyone began to eat them. There are many fields, and I'm tired of eating them later (*? -? *)