她的可耕地面积的平均水平相当低。
这样就提供了有关扩大可耕地面积的宝贵数据。
This has provided valuable data for extension of cultivable land.
大是地多人多，地多还不如说是山多，可耕地面积并不多。
铝的有害性严重制约了约占世界可耕地面积40%的酸性土壤中的作物生产。
Aluminum toxicity limits crop prodution on acidic land, which accounts for 40% arable land in the world.
蒙古是18世纪世界上面积最大的国家，不过蒙古的可耕地面积非常少，大部分都是草地。
Mongolia is the 18th largest country in the world by area. However, it has very little arable land: much of its area is grassland.
我国可耕地面积只占国土面积的10%左右，土地沙化、土地退化、土地污染又十分严重。
Chinas arable land area is only about 10% of the nation's whole territory. At the same time, we are facing very serious land desertification, land degradation and land pollution.
从1985年起，世界人口增长率超过食品的增长率，可耕地面积和谷物生产率每年都在减少。
Since 1985, the growth rate of population of the world is over that of the food production. The cultivated land and the grain production rate are decreasing every year.
传统种植业正破坏环境，到2050年，全世界人口将达95亿，届时可耕地面积将不足以供养这么多人口。
Farming is ruining the environment, and not enough arable land remains to feed a projected 9.5 billion people by 2050.
博拉格的方法能有效提升产量，却降低了可耕地面积，而且看起来他要证明有机农业的做法是错误的还需要数年时间。
Borlaug's methods often raised yields while reducing acreage, and it seemed for years he'd proven the organic movement wrong.
农民不断增加租用可耕地面积，这也意味着他们对耕种土地的侵蚀风险并不熟悉，或者从长远打算来看，并不想在保护土地方面投入太多。
Farmers increasingly rent the land they cultivate, which can mean they are less familiar with areas at risk for erosion or are less invested in caring for the land over the long run.
该区占世界石油储备量的15%，占世界可耕地面积的1/4（大量尚未开垦），占世界淡水量的30%，并且有丰富的矿产资源储备。
The region has 15% of the world’s oil reserves, a large stock of its minerals, a quarter of its arable land (much of it unused) and 30% of its fresh water.
该区占世界石油储备量的15%，占世界可耕地面积的1/4（大量尚未开垦），占世界淡水量的30%，并且有丰富的矿产资源储备。
The region has 15% of the world’s oil reserves, a large stock of its minerals, a quarter of its arable land (much of it unused) and 30% of its fresh water.
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