Farmers and gardeners have turned the soil for centuries. But many now believe in no-till or reduced tillage, a method also called conservation tillage.

农民和园丁们耕作了几个世纪，但是现在他们中很多人开始采取少耕或免耕方法，也称保护性耕作。

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The floor had the biggest bacteria party, revealing what the authors called "diverse bacterial communities" of organisms, including several typically found in soil.

而地面上检出的细菌种类最多，正像作者所称是“形形色色的细菌群落”，包括几种通常存在于土壤中的细菌。

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The less-disruptive system is called “strip tillage” because only narrow bands of soil are tilled instead of the entire field.

破坏性小的耕作法叫做“带状耕作”，因为仅仅耕一条条很浅的条块，而不是整块土地。

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They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

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"Those two earthquakes really opened up a lot of new research on something called soil liquefaction,in particular.

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They called it the Free Soil Party, because they believed in free land for free settlers.

VOA: special.2009.03.12

Next month, the group also will start test marketing a concept called the Soil Trust, an ambitious loan guarantee for money lent to local enterprises.

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Echale homes are made of adobe bricks called Adoblock, which use local soil.

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They are chemical variants of an antibiotic called rapamycin, which Wyeth researchers found in soil samples from Easter Island in the Pacific Ocean in the late 1960s.

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