Water use in agriculture农业用水.pdf

Agriculture, Biosecurity, Nutrition
and Consumer Protection Department
Food and anization
of the United Nations
Water use in agriculture

As cities draw on more water resources for their rapidly growing
populations, agriculture must significantly improve its water use efficiency
and productivity
The productivity of irrigated land is
approximately three times greater than that of
rainfed land. Beyond that global fact, there are
many more reasons for highlighting the role of
water control in agriculture. Investing in
irrigation development provides insurance
against erratic rainfall and stabilizes agricultural
output, boosting crop productivity and allowing
farmers to diversify. This translates into
increased and less volatile farm es.
In turn, a more predictable and stable
production system has a positive effect on
providers of services to the sector, increasing the
non-farm multiplier effect of the investment. In
addition, investment in water development
increases the value of land. Small-scale water
collection, irrigation and drainage works and secondary production functions. Natural
implemented with local labour are economically ecosystems and agriculture are by far the biggest
viable, and once the basic infrastructure has consumers of the Earth's freshwater.
been put in place with public funding, further Appropriati