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Rice-fish farming landscape in Arunachal Pradesh, Northeast India. Net gains vary between and within countries. Overall, integrated rice-fish fields have a positive impact on net returns. In Bangladesh, net returns are over 50% greater than in rice monocultures. [6] In China, the net return by region is between 45 and 270% greater. [6]
Chinese Rice Fish have been utilized in China and Asia for hundreds of years for rice farming. [6] This process allows the fish to provide protein to the rice, enhancing the food. It is proven that in the presence of rice fish, rice fields grow better, and the rice yield is increased by approximately 4–15%. [7]
Rice terraces in Yunnan, China. Rice production in China is the amount of rice planted, grown, and harvested for consumption in the mainland of China. It is an important part of the national economy, [3] where it is the world's largest producer of rice, making up 30% of global rice production. [3]
Aquaculture is the farming of fish and other aquatic life in enclosures, such as ponds, lakes and tanks, or cages in rivers and coastal waters. China's 2005 reported harvest was 32.4 million tonnes, more than 10 times that of the second-ranked nation, India, which reported 2.8 million tonnes. [2]
Ducks with free access to rice paddies in Bali, Indonesia provide additional income and manure the fields, reducing the need for fertilizer. [25] In South-East Asia and China, rice-fish systems on rice paddies have raised freshwater fish as well as rice, producing a valuable additional crop and reducing eutrophication of neighbouring rivers. [26]
Due to the shortage of available farm land and an abundance of labor, it might make more sense to import land-extensive crops (such as wheat and rice) and to save China's scarce cropland for high-value export products, such as fruits, nuts, or vegetables.
Dish of rice with swamp eel in China. The fish is an important protein source for people in Thailand. [18] It is cultured throughout Vietnam. [20] In Indonesia, Cambodia, China, Laos, Myanmar, Thailand, Vietnam, and other Asian countries, swamp eels are farmed in polyculture rice fields and sold as a food product with the rice crop. [citation ...
Rice polyculture is the cultivation of rice and another crop simultaneously on the same land. The practice exploits the mutual benefit between rice and organisms such as fish and ducks: the rice supports pests which serve as food for the fish and ducks, while the animals' excrement serves as fertilizer for the rice.