EL CAMPO, Tex. -- Even though Donald R. Matthews put his sprawling new residence in the heart of rice country, he is no farmer. He is a 67-year-old asphalt contractor who wanted to build a dream house for his wife of 40 years.

Yet under a federal agriculture program approved by Congress, his 18-acre suburban lot receives about $1,300 in annual "direct payments," because years ago the land was used to grow rice.

Matthews is not alone. Nationwide, the federal government has paid at least $1.3 billion in subsidies for rice and other crops since 2000 to individuals who do no farming at all, according to an analysis of government records by The Washington Post.

Some of them collect hundreds of thousands of dollars without planting a seed. Mary Anna Hudson, 87, from the River Oaks neighborhood in Houston, has received $191,000 over the past decade. For Houston surgeon Jimmy Frank Howell, the total was $490,709.

"I don't agree with the government's policy," said Matthews, who wanted to give the money back but was told it would just go to other landowners. "They give all of this money to landowners who don't even farm, while real farmers can't afford to get started. It's wrong."

The checks to Matthews and other landowners were intended 10 years ago as a first step toward eventually eliminating costly, decades-old farm subsidies. Instead, the payments have grown into an even larger subsidy that benefits millionaire landowners, foreign speculators and absentee landlords, as well as farmers.

Most of the money goes to real farmers who grow crops on their land, but they are under no obligation to grow the crop being subsidized. They can switch to a different crop or raise cattle or even grow a stand of timber -- and still get the government payments. The cash comes with so few restrictions that subdivision developers who buy farmland advertise that homeowners can collect farm subsidies on their new back yards.

The payments now account for nearly half of the nation's expanding agricultural subsidy system, a complex web that has little basis in fairness or efficiency. What began in the 1930s as a limited safety net for working farmers has swollen into a far-flung infrastructure of entitlements that has cost $172 billion over the past decade. In 2005 alone, when pretax farm profits were at a near-record $72 billion, the federal government handed out more than $25 billion in aid, almost 50 percent more than the amount it pays to families receiving welfare.

The Post's nine-month investigation found farm subsidy programs that have become so all-encompassing and generous that they have taken much of the risk out of farming for the increasingly wealthy individuals who dominate it.

The farm payments have also altered the landscape and culture of the Farm Belt, pushing up land prices and favoring large, wealthy operators.

The system pays farmers a subsidy to protect against low prices even when they sell their crops at higher prices. It makes "emergency disaster payments" for crops that fail even as it provides subsidized insurance to protect against those failures.

And it pays people such as Matthews for merely owning land that was once farmed.