从分子力学角度出发，用微观统计学的方法分析处于平衡状态时无结构土壤中水的力学特征。
Soil water distribution in balance state is studied by using statistical methods, based on the theory of molecular mechanics.
利用常用的入渗模型和线性模型，将层状结构土壤的水分入渗过程进行分段表示，并分析得到了计算有关参数的方法。
Infiltration process of layered soils was expressed as different stages using common infiltration models and linear models, and the methods about how to obtain major parameters were also derived.
对樟子松人工林群落结构和土壤水分动态进行研究。
The community structure and dynamics of soil water of Pinus sylvestris var. of the mongolica plantation were studied in a growing season.
另一项最新研究发现，单独一次耕作不会对通常不耕作的土地产量或土壤结构造成破坏。
Another recent study found that a single tillage does not harm yield or soil structure in land that is normally not tilled.
另一些人认为是由于作物的细胞结构受影响和土壤成份被改变的原因。
Others say the cellular structure of the plants is affected and that the composition of the soil is altered.
垄播改善了土壤肥力和结构，对减少流失、水的利用和除草剂的施用也有帮助，也方便了机械和人工除草。
Bed planting improves soil fertility and structure and helps reduce erosion, water usage, herbicide use and facilitates mechanical and manual weeding.
布雷迪·考克斯：“然后结构工程师拿着那些土壤的资料，并用它们来详述建筑的有关方面，这将是钢铁结构吗？”
BRADY COX: "Then the structural engineers take that information and they use it to detail the building in terms of, is this going to be a steel structure?"
海地的土壤非常贫瘠，即使施以大量化肥也无法恢复土壤结构。
Haiti's soil is so thin, even massive amounts of chemical fertilizers can't restore soil structure.
现在，我们发现它可以改变土壤的结构，使土壤变得更松软。
Now we find that it's changed the structure of the soil, and made it much softer.
最糟糕的是土壤物理结构的变化，如果表层土壤侵蚀，土壤更难保水保肥。
Worst of all, the physical structure changes if the top soil erodes, making it harder for the land to retain water or fertiliser.
这些橙红色的土壤块与传统竹一起表达当地区域结构的传统文化。
These orange colored soil blocks express traditional in the area together with the bamboo structure.
通过田间试验研究了返青期不同程度根修剪处理对冬小麦群体结构、土壤水分及产量形成的影响。
A field experiment was conducted to study effects of root pruning at returning green stage on population structure, soil water and yield formation of winter wheat.
只要土壤结构能够保持，他们就能够种出优良的谷物。
They will grow good cereal crops so long as soil structure is maintained.
确保工厂有足够的间距，使根的结构和土壤吸收径流。
Make sure that plants have adequate spacing to allow root structures and soil to absorb runoff.
同时，高分子经过自然降解转化为有机物质，可在较短时间内改善土壤结构。
It improved the soil granular structure in a short time, since high molecular compounds naturally degraded into organic matters.
蚯蚓吃下大量土壤，排出肥力丰富、物理结构理想的腐殖质。
Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.
中国古典小说与西方传统小说，由于文化土壤不同，在结构艺术上呈现不同的特征。
Owing to the different culture, the Chinese classic story and the Western traditional novel had different structural art.
毛竹林土壤养分的结构性变异大于随机变异。
The structure variance of soil nutrient is bigger than the random variance.
这种土壤的结构和肥沃度差异很大。
土壤生物和酶活性在改善土壤结构、养分循环、有机质分解和保持中起重要作用。
Soil organisms as well as enzyme activities perform important functions in soil, including structure improvement, nutrient cycling, and organic matter decomposition and retention.
堆肥腐烂有机体的混合物，如树叶或粪便，用来改善土壤结构并增加土壤养分。
A mixture of decaying organic matter, as from leaves and manure, used to improve soil structure and provide nutrients.
研究如此的雪崩能让行星地理学家较好地了解火星土壤结构。
Studying such avalanches allows planetary geologists to better understand soil configurations on Mars.
地下水——在土壤，岩石，或全湿地结构的地下水位下发现的地表水。
Groundwater — Subsurface water that occurs beneath a water table in soils, rocks, or in fully saturated geological formation.
秸秆覆盖还田促进土壤团粒结构形成，提高了土壤水稳性团聚体含量，从而改善了土壤通透性和保水保肥性。
Straw mulched could improve soil granular structure, and increase the content of water-stable aggregates, so the ability of permeability, fertilizer and water conservation got improved.
不同恢复措施的土壤物理结构、土壤化学性质均获得明显的改善。
The soil physical structure and the soil chemical properties in two restoring measurement are obviously improved.
不同恢复措施的土壤物理结构、土壤化学性质均获得明显的改善。
The soil physical structure and the soil chemical properties in two restoring measurement are obviously improved.
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