GIS (geographic information system)-based distributed-type rice field nitrogen runoff loss load estimating method
A rice field, nitrogen technology, applied in computing, instrumentation, data processing applications, etc., can solve problems such as single empirical value, difficult data sharing, impossible physical description, etc.
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[0068] The Hangjiahu Plain is selected as the application area. The plain is located in the south of Taihu Lake. The terrain in this area is extremely low and flat, with dense river networks and the Beijing-Hangzhou Grand Canal passing through. The region includes the three cities of Hangzhou, Jiaxing and Huzhou. As the base of China's commercial grain, the Hangjiahu Plain is the largest grain-producing area in Zhejiang Province and has been a prosperous "land of fish and rice" since ancient times. However, with the development of industrialization, urbanization and agricultural modernization, the quality of water environment is deteriorating day by day, and the loss of farmland fertilizer and its impact on the environment are becoming more and more serious and attract people's attention. Under rainfall conditions, large amounts of nitrogen fertilizers are particularly prone to loss through rainfall runoff and leaching, polluting surface and shallow groundwater. The irrationa...
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