With the Chinese government pinning its hopes for economic resurgence on stronger rural demand, the swelling ranks of jobless migrant workers are making it a much tougher task.

Chen Zhiwei is leaving home in southwest China's countryside for his ninth year of city laboring, but he has no clear destination this year.

He quit his job at a timber plant in Jiashan, Zhejiang Province, at the end of 2008 after seeing his monthly pay shrink to 800 yuan (117.6 U.S. dollars) from 2,000 yuan.

"It was bad times -- 800 yuan was not even enough for basic spending there. I had no choice but to come home," said Chen.

Growing joblessness will slow income rises for rural residents and compound the economic troubles China faces in its attempt to boost rural consumption, a key part of domestic demand.

With less cash back for Chen's family in rural Manjing Township, Sichuan Province, this year's Spring Festival celebration will be subdued.

"I don't think it will be easier (to find a job) after the lunar New Year," he said.

The government estimates about 20 million rural migrants, or 15.3 percent of all rural workers employed outside their hometowns, have returned home without jobs.

The number reflects a harder-than-expected blow from the global financial crisis, says Tang Min, deputy secretary of the China Development Research Foundation.

Slumping foreign demand has forced China's coastal industries to close or scale back production, claiming the jobs of millions of migrants.

"Large scale layoffs of migrant workers will take a heavy toll on rural incomes and consumption," Tang says. Official figures show migrant wages account for about 40 percent of the average net income of rural Chinese.

Moreover, income changes affect farmers' spending more obviously than they do for urbanites, said Wen Tiejun, head of the School of Agricultural Economics and Rural Development at the Renmin University of China.

"Research shows if a farmer earns more, he will spend 70 percent of the increase, compared with 50 percent for an urbanite. When less money is made, rural people will cut spending more drastically than city dwellers."

That's bad news for Chinese authorities, who are focusing on domestic demand as the bases for faltering economic growth.

"The countryside holds the biggest potential for boosting domestic demand," said the State Council and the Central Committee of the Communist Party of China in the first document of the year issued Sunday.

The document outlines policies to raise rural subsidies, improve infrastructure and better tap the vast rural market.

China should "especially place priority on tapping the rural market and developing the countryside" to alleviate the effects of the global financial crisis, said Vice Premier Wang Qishan last month.