Rice Farming Essay examples

1034 Words Nov 19th, 2013 5 Pages
Rice-fish farming systems in China
Both rice and fish cultivation have long histories in Asia, where many species and varieties of each originated and were first developed for human use. Fish can be raised in rice fields, either concurrently with the rice crop or in rotation with rice. Ricefish farming can also be practised at different intensities. Not only do rice-fish systems use one habitat to produce both an important grain and a protein resource, but they also promote some very beneficial interactions: rice plants provide shade for fish, while fish oxygenate the water. The systems also minimize risks for resource-poor farmers, protect natural resources and promote biodiversity. As world rice production increases, so too does the
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Traditional (capture), concurrent and low-intensity fish culture (using no fertilizer and no feed) systems coincide with river floods and promote the culture of very rich fish diversity compared with intensive fish culture. The fish can subsequently be rotated for growth and fattening without rice in the harvested rice fields.

As well as using one habitat to produce both an important grain and a protein resource, rice-fish systems promote a variety of beneficial interactions. For example, the rice plant provides shade and insects for the fish, as well as organic matter that the fish can use, while the fish oxygenate the water and move the nutrients around, thereby benefiting the rice. The fish provide biological pest control, and Azolla spp. also fix nitrogen for the rice. In addition, complex and diverse food webs of microbes, insects, predators, and cultivated plants and livestock provide benefits to one or both of the system’s components. Rice-fish systems are risk-minimizing and suitable for resource-poor farmers, enabling them to cultivate fruit and vegetables on dikes and bunds and to raise such small livestock (pigs and poultry – especially geese and ducks) as is culturally and economically preferred. Rice-fish systems promote ecological and economic efficiency through the recycling of materials and nutrients and through the synergies between their two components. They safeguard water, soil resources and

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