Jiangxi Province raises pigs with "low carbon" for ten thousand years to realize the sustainable development of pig industry.

Wannian County, Jiangxi Province vigorously promote zero-emission and other low-carbon pig raising technology, effectively solve the dilemma between pig production and environmental protection, and achieve a balance between economy and ecology. This is a concrete manifestation of the county's active integration into the construction of Poyang Lake Ecological Economic Zone through the development of pig industry through the Green Revolution.

Wannian is a major pig farming county in Jiangxi, with 26 pig farms with more than 10,000 heads and more than 800,000 pigs per year. In promoting the construction of Poyang Lake Ecological Economic Zone, the county puts strengthening the pollution control of pig farming in a prominent position, not only vigorously promoting the use of biogas technology in pig farms above scale, but also taking the construction of new countryside as an opportunity to actively guide and help the construction of biogas digesters. The county finance invests 1 million yuan a year to subsidize the cost of biogas digester equipment, construction materials and technicians' wages. At present, the pig products of 5 pig farms in the county have been awarded the national pollution-free agricultural product certificate through biogas utilization, and 13,000 pig farms have been awarded the title of provincial pollution-free agricultural product base. The county's 22 pig breeding enterprises have established biogas digesters. Jixing Pig Farm, one of the top 100 enterprises in China's pig industry, produces more than 80,000 high-quality commercial pigs a year, producing an average of more than 150 tons of feces every day. In order to reduce the pollution degree, the pig farm invested nearly 6 million yuan to build the pig farm sewage treatment process system, carried out rain and sewage diversion, dry and wet separation, sewage treatment, and pig farm manure was returned to the field through harmless treatment. the development of grain, seedlings, fruits and vegetables and other planting industry, a better balance of costs between planting and breeding has been achieved.

Dry dung turns into green manure. In this county, the fermentation base of HM strain was added to the pig manure, and then the auxiliary materials such as grain husks were added, stirred evenly, and stacked in the fermentation tank, and the odor was completely eliminated after 3 days. The fermentation period is generally 10 to 15 days. After this fermentation treatment, pig manure can not only deodorize, but also kill germs, weed seeds and insect eggs. After further treatment, it can also be processed into special organic fertilizer for seedlings, melons and fruits and vegetables. It not only solves the environmental pollution caused by the development of pigs, realizes the sustainable development of pig industry, but also increases the economic benefits of enterprises and promotes the construction of ecological agriculture. Up to now, 23 pig farms with more than 10,000 heads in the county have invested 70 million yuan to set up pig manure fermentation ponds, and the county has basically achieved zero discharge of pig manure. More than 80 villagers in Tangbei Village, Qibu Township, grow pollution-free vegetables, paulownia, Camellia oleifera and Phyllostachys pubescens by using harmless pig farm manure, with an average annual income of more than 1000 yuan.