Better irrigation can dramatically improve crop yield and about 40% of the world's food supply is currently derived from irrigated land.

更好的灌溉可以显著提高作物产量；目前，全球约40%的粮食供应都来自于灌溉地。

youdao

I think it will grow even on non-irrigated land where there is a forest belt.

我想即使在没有灌溉的土地上，只要有一条树林？

youdao

The Hill and Mountain agro-ecosystem is characterized by very little irrigated land and difficult terrain.

在山与山农业生态系统的特点是很少的灌溉土地，地势崎岖。

youdao

And in sub-Saharan Africa, where only four percent of the land is irrigated, buying a small pump can make a big difference.

VOA: standard.2010.08.09

Another 20 percent of irrigated land is damaged by water logging or salinity, the agency says.

CNN: All About: Food and the environment

Half the irrigated land in the Sao Francisco valley is the product of public investment.

ECONOMIST: Brazil

But the river system that covers two-thirds of Australia's irrigated farming land is also suffering from decades of overuse.

ECONOMIST: To turn a drought into wine