The computer in the farmhouse is checking the temperature, the water and the level of organic material in the soil.

农舍里的电脑正在检查温度、水和土壤中有机物质的含量。

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Sari Stark of the Finnish Forest Research Institute proves Wells' contention, right down to the soil level.

芬兰森林研究中心的萨里.斯达克证明了威尔斯的观点，完全在土壤水平。

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A drop in pH on the level identified in the study could have some very harmful effects. Acidic soil is paradise for nematodes, parasitic roundworms that destroy crops.

在这项研究中表明PH值的下降可以导致很多非常严重的后果，酸化土壤是那些毁坏作物的线虫和寄生蛔虫的天堂。

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The researchers say the nanodiamonds were all found in a level of soil thought to be about 13,000 years old.

VOA: special.2009.01.20

Soil should also be tested for its pH level, a measure of the acid and alkaline balance.

VOA: special.2009.06.09

Beets need the acidity level in the soil to be six to seven and a half.

VOA: special.2010.03.02

From packaging, sales, and marketing to shipping and inventory management, sowing entrepreneurial seeds in Costco soil yields a high level of productivity and effectiveness.

FORBES: The Costco Factor: To Win The Business Game, You Need to Change How You Think

But the real work of conservatives now is not at that superficial, topsoil level, it is in the deeper soil of policy and the tap root of values where conservatives need to toil now.

FORBES: Ignore The Pundits, Conservatism Doesn't Need An Extreme Makeover

Working organic amendments such as compost into your soil will help it drain faster and retain a more even level of moisture.

CNN: X-rated yards save the environment