Disasters of Flood and Waterloging Impact on Agriculture

摘要

Agricultural production and water conservancy facilities in china are a high probability of suffering from disasters of flood and waterloging, it is important for researching on the impact of it. Based on actual data from 1990 to 2010, disasters of flood and waterloging impact on agricultural production and water conservancy facilities is analysed. The rate of areas covered is the highest rate in 1991, reaching 16.4 percent, the average rate 8.96 percent; The rate of areas affected is the highest rate in 2003, reaching 63.8 percent, the average rate 54.4 percent; The rate of areas affected completely in Hainan is the highest rate in 2010 in china, reaching 57.4 percent, usually about from 20 percent to 40 percent. The average number of large and medium damaged reservoirs caused by disasters of flood and waterloging is 43.8 from 2006 to 2010, small damaged reservoirs 17.87 hundred, the damaged embankments 48.239 thousand, the damaged embankments length 10.42 thousand km, the damaged locks 9.97 thousand, the direct economic losses of water conservancy facilities 27.95 billion RMB. But the indicators in 2010 is higher than average value, indicating water conservancy facilities damaged severely. The flood and waterloging has a significant impact on growth and yield of crops. The rate of areas covered, the rate of areas affected, the rate of areas affected completely are three important indicators to evaluate the damaged area of crop. Impact on water conservancy facilities is very serious, the central and local governments need to pay high attention to it.