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China's water-saving drive makes its way to nation's farms (4) |
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13:24, December 03, 2008 |
Farmland with new irrigation technology accounts for only 35 percent of the total. In some developed countries, such as Israel, 80 percent of farms use water-saving technologies.
And even though it's hard to conserve water, China needs to provide an extra 30 billion cubic meters of water to irrigate farmland, if it is to meet the target of 950 million mu of irrigated land under cultivation in 2020, industrial officials said.
Despite pressing demand, China is unlikely to increase irrigated water supplies in the near future, considering the current water resources and the pace of social and economic development, industry officials said. The answer lies in conservation just to stay in place, they said.
China has promoted water-conserving irrigation technologies for many years. Substantial progress was made starting in the mid-1990s, when new technology from Israel and elsewhere was introduced.
Film-mulched drip irrigation, which uses a combination of agricultural film and trickle irrigation technologies, is particularly efficient.
Jia Xiwu, a villager in Tongyu County, Jilin Province, has used the technique on 15 mu of land since last year. He found it minimized the use of water by allowing the water to drip slowly to the roots of plants through a network of valves, pipes, tubing and emitters.
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