Through blank experiment of terraces. it shows that the soil fertility of newly built terraces is distributed in a crumby shape which is remarkably different than that of the ordinary farm soil.

通过梯田土壤空白试验，证明新修梯田土壤肥力呈现团块状分布规律，这与一般农地土壤肥力分布具有明显的区别。

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With their enormous size and weight, today's farm machines have significant downsides: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.

由于庞大的体积和重量，现在的农业机械有显著的缺点：它们会把土壤压实，降低土壤孔隙度，杀死有益的生命，这意味着农作物不会长得太好。

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The United States is a land rich in mineral resources and fertile farm soil, together with a moderate climate.

美国具有丰富的矿产资源和肥沃的农田，气候温和适中。

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Rivers are drying up, grazing land for cattle is scarce, and the dry soil is hard to farm.

VOA: standard.2010.04.01

Many farmers using these seeds have even been able to implement a "no-till" system, which offers tremendous environmental benefits by preventing soil erosion, keeping farm water and chemical run-off out of local watersheds and releasing less carbon dioxide into the atmosphere.

FORBES: Magazine Article

Having spent long days on his uncle's farm, he knows what it's like to work the soil for a living.

FORBES: Bucking the downtrend

Having spent long days on his uncle's Effingham, Ill. farm, he knows what it's like to work the soil for a living.

FORBES: Bucking the downtrend