The results showed that there were significant differences in changing sunlight intensity, reducing noise, and accumulating dust in different forest land cultivation mode.

结果表明：不同林地栽培模式在改变光照度、降低噪音、吸滞粉尘等环境效应上差异显著。

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The land is not fertile enough to repay cultivation.

这块土地不够肥沃， 不值得耕种。

《新英汉大辞典》

But the additional land available for cultivation is unevenly distributed, and much of it is suitable for growing only a few crops.

但大量可供种植的土地分布不均，而且大多只适合种植少数农作物品种。

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There are more people who can work to increase the production, but beyond that point there are more people to feed than the production can produce, and that leads to a desire for expansion of the land available for cultivation.

越来越多的人从事工作,生产力得以提高,但是一旦突破临界值,花费就要超过所得了,它导致了对土地扩张的需求

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Likewise, conservative lawmakers may favor opening up land to cultivation, while others prefer saving land for hunting constituents.

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Basic trends have been decline in land under cultivation and decline and aging of farming communities.

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Expanding supply at the same rate will be difficult, because the amount of arable land under cultivation is growing by only a fraction of a percentage point each year.

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