In addition, farmers in the same area at the same time, and the rice is not grown on rice alone. No other types of crops in the crop rotation at all. Soil is not rich and complete lack of causing a lot of problems, regardless of whether it is a problem of irrigation water shortage due to the rice water is required in large quantities and that rice farmers do not simultaneously make water management more difficult. Problem easily degraded because it does not have to stay and make adjustments to the conversion routine soil at all. It also causes the problem of rice weeds because farmers need to accelerate land preparation, planting, rice is not that good. The problem of disease and insect pests, especially leafhoppers, had a distinctive Brown RA. Grain quality issues because the rice standard is insufficient. The problem of rice destroyed ecological systems. There is a large amount of chemicals used. Make rice high production costs and a cause of global warming.
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