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"Agricultural water demand in 2017 was down more than 4.6 billion cubic meters in 2016, but still account for 62% of the total water demand, in terms of water saving irrigation, there are obvious difference, China and other countries on improving the efficiency of agricultural irrigation has great potential."
According to the index of the average water consumption per mu for farmland irrigation, from 439 cubic meters in 2004 to 394 cubic meters in 2015, the decline is relatively large. On the other hand, agricultural water use is projected to remain 62 per cent in 2017, compared with 69 per cent in 2000, and the data suggest a gradual decline over the years.
Proportion is still high, xiu-li liu analyzes believed that give priority to with channel seepage irrigation in our country, water saving rate is only 20%, water-saving effect is good sprinkler irrigation and microspray irrigation, water saving efficiency is between 30% and 50%, respectively, can even reach 80% or 85%, but now has not been widely applied in our country.
Comparing our country and other countries, in 2014, spray irrigation area accounted for only 11.1% in China, the United States in 2009 share has reached more than 56%, Brazil in 2013 accounted for 77%, "said so in terms of water saving irrigation, China and other countries have obvious difference, we on improving the efficiency of agricultural irrigation has great potential."
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