A review of rice-fish culture in China
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In China, fish culture in rice field has a long history which can be dated as far back as the mid Han Dynasty about 100 AD. [1] Rice-fish culture is common in the southeastern provinces and also in the mountainous areas of the southwestern provinces where there are a few rivers or lakes but fresh fish are not available. Also because of the better economic returns rice-fish culture has gradually spreaded from the mountainous districts to the plain areas. However, at times the development of ric e-fish culture has suffered in China because of changing techniques of rice palnting along with the wider application of insecticide and chemical fertilizers. In 1950s, it developed rapidly in Guangdong but in the early 1960s the area of rice-fish culture quickly shrank because of spraying of chemical insecticides. It did not recover until the middle of 1960s.