The past few weeks have been a boon for Liu Guoliang, a construction worker in Beijing, for he has been enjoying a pork dish every day, according to official sources in China.

"I couldn't afford to buy pork earlier because it was too expensive," Mr Lin said last week. He earns about 1,000 yuan (RMB; $147) a month, and finds "pork affordable now".

Falling pork prices may be a blessing for low-income families but it is giving nightmares to pig farmers in many parts of the country. It has even prompted the government to work out a bailout plan for the struggling farmers.

Prices of pork, the staple meat for most Chinese, has been falling for the past 16 weeks, according to Ministry of Agriculture figures. In some places, prices have dropped to levels not seen in years. The national average pork price last week (4 to 10 May) was RMB 13.68 a kilo, about 28 per cent less than when the fall began.

Ministry of Commerce spokesman, Yao Jian, said a key element of the bail-out plan was expanding the country's cold storage chain so that more pork can be stored.

The government's procurement plan, which would last several weeks, and the expansion of the cold storage expansion chain will provide farmers a chance to sell their "excess" products, industry insiders said.

On 12 May, the National Development and Reform Commission (NDRC), China's top economic planning body, said falling pork prices were a matter of concern.

NDRC officials said that they were preparing a procurement plan that would enable the government to buy part of the surplus pork in the market.

To draw buyers, pork retailers in many parts of the country are fighting a price war. The minimum price in Jilin province is already less than RMB 10 a kilo. It was RMB 11 three months ago, and supermarkets in Hubei province are selling it for RMB 10.39 per kilo compared to RMB 14.3 in March.

Some local governments have already started their procurement plan.

The Sichuan provincial government, for instance, has introduced the scheme ahead of others because pork prices there are already below the national average, according to Tianfu Morning Post.

Market analysts said the drastic fall in prices could be attributed first to soaring prices between 2007 and 2008, when natural disasters hampered supplies nationwide.

Later, new investments – some from even urban industrial and financial firms – resulted in mushrooming of pig farms. That led supply to surpass demand in a short time, said Wu Yan, a food analyst with Northeast Securities.

And then the H1N1 flu scare dealt another blow to pork sales.

Beijing pork vendor, Chen Dirong, complained that sales had not picked up even after a big drop in prices. "Not many people are buying pork after the H1N1 scare." He used to sell about 50 kilos of pork a day, but now manages to get buyers for only 15 kg, he said.

Some officials said pork prices have fallen because of the "seasonal factor" too because people tend to eat less meat in the summer.

But now prices have almost reached the bottom, Mr Wu said, and would pick up in August, when there is likely to be better balance between demand and supply.

In the intervening period, the government should take some action to help stabilize the market, he said. Since pork prices tend to fluctuate wildly every two to three years, some sort of "intervention is necessary".