surface soil

基本解释

The average amount of water reported, if we were to extract it, is about a quart of water per ton (of surface soil).
如果要提取水，每吨（表层土壤）含水量大约为一夸脱。
To put it another way, he said, about 16 ounces of water might be present for every 1,000 pounds of surface soil near the moon's poles.
换句话说，每 1,000 磅月球两极附近的表层土壤里，可能有 16 盎司的水，他表示。
The sample is from the surface soil that scientists say covers a layer of ice.
科学家称上面覆盖一层冰的土壤样品是来自火星表层。
blog.sina.com.cn

LCROSS will then study the soil thrown up to ten kilometers above the lunar surface before it too crashes into the moon.
The crash caused soil to be expelled many kilometers above the lunar surface.
Drop the seeds over the surface and cover them lightly with soil.

The remaining soil contamination is located several feet below uncontaminated surface soil.
FORBES: Move up http://i.forbesimg.com t Move down

表层土壤
In this paper, the surface soil (0-20cm) in the Xi’an 14 main parks has been carried on the synchronized open country investigation, sample gathering and the analysis test.
本文对西安市14个主要公园表层土壤(0-20cm)进行了同步的野外调查、样品采集和分析测试。
耕层土壤
Farmland surface soil (0-30cm) nitrogen concentration directly affects the intensity and frequency of nitrogen loss. At the same time, it affects surface mud (0-5cm) nitrogen concentration of adjacent ditches of farmlands.
农田耕层土壤(0-30cm)氮素含量直接影响农田氮素流失的强度,也直接影响着农田旁沟渠表层底泥(0-5cm)的氮素含量,在其它影响因素相同的前提下,农田耕层土壤(0-30cm)全氮含量越高,农田氮素流失的强度就越高,产生高水溶性总氮浓度的次数就越多,农田耕层土壤(0-30cm)速效氮含量越高,农田旁沟渠表层底泥(0-5cm)速效氮含量就越高。
地球科学
表土
表层土壤
The CO2 emitted from the surface soil comprises an important part for the soil CO2 flux of the alpine meadow soil profiles.
高寒草甸表层土壤产生的CO2是土壤剖面CO2通量的主要贡献者。
表面土壤
土壤表层

表土
The representation of pollen in surface soil is different from families and genera.
表土花粉的代表性因种属的不同而各有差异。