Rainfall makes the soil density and disperse coefficient increased and porosity decreased.
降雨能使火烧迹地的土壤密度和分散系数升高、孔隙度下降。
Soil density and soil particle of the loam are decreased but those of the sand are increased.
壤土的土壤密度、比重降低，而砂土的土壤密度、比重增高。
The research results of the effect of covered soil density on reducing radon emanation rate are introduced.
介绍了覆土密度对降低氡析出率影响的试验研究结果。
The more is the temperature gradient, and the less is the soil density, the more is the water content gradient.
密实度对含水量分布的影响是密实度越小的土样其含水量的变化越大。
Model tests of large driven pile jacked into sands were conducted to obtain the soil density changes due to the compaction.
通过砂土中的大型沉桩模型试验，得出了桩周土体相对密度的变化规律。
The soil density is decreased, and the disperse coefficient and porosity are increased in the sites where were burnt in successive years.
连年火烧使土壤密度比未烧林地下降，而孔隙度和分散系数升高。
Performance is mainly determined by the soil physical properties, soil density, moisture, porosity, clay content and the forest root such as other factor.
其性能主要是由土壤密度、水分、孔隙度、黏粒含量等土壤物理性质以及森林植物根系等因子决定。
The soil density of control area of every soil layers of four sample plots in the meadow steppe and typical steppe is lower than the severe degeneration area;
草甸草原、典型草原样地各土层对照区土壤密度均低于重度退化区。
In thiS model, non-uniformly variations of soil density and shear modulus with depth are taken into consideration. Numerical computations are conducted for typical cases.
在本模型中考虑了土壤特性（如密度与剪切模量） 沿深度的非均匀变化，通过对典型场地剖面的数值计算探讨了有关因素对场地地震反应的影响。
Saturation of silty clay is related with soil density, condition of experimentation, moisture contents, transportation and preservative condition of soil sample and so on.
粉质粘土饱和度与其密度、含水量、试验条件及土样运输和保存等因素密切相关。
The results showed that after skidding operation, the soil density increased, the soil moisture condition got bad, the soil porosity and the contents of soil nutrients decreased.
通过对半悬索道集材后林地土壤理化性质的分析，结果表明：半悬索道集材后土壤容重增加，土壤结构和水分性能变差，土壤养分含量下降。
Taking the soil density and water content into account, a numerical model of moisture migration in unsaturated loess subgrade was given, and parameters of the model were obtained.
考虑含水率和密度影响，给出了非饱和黄土路基水分场的计算模型，探讨和确定了模型参数。
Set up mathematics models of soil organic carbon, taking soil carbon content as objective character, and soil water content, soil density, plant biomass and soil depth as effect factors.
可以认为土壤含水量和植物生物量是影响土壤有机碳含量的重要因素。
After that it is pointed out that compared with soil density changes, water content change can result in more variations of coefficient of thermal conductivity and specific volume heat of loess.
相对于随密度的变化，黄土导热系数和比热容随含水量的变化尤为显著，含水量变化可以引起热参数较大的变化。
The technology was helped by the density of houses and other buildings, made of mud brick so that they showed up somewhat clearly against the looser soil cover.
这种技术利用了显现房屋和其他由泥砖建成的建筑的密度特性，因此可以清晰的显现被松散的泥土覆盖的物体。
Density had more significant effects on wheat yield than soil fertility.
密度对小麦产量的影响比土壤肥力更为显著。
Last, the device was used to prepare the soil samples with different density, and the satisfied results were reached.
用该装置实际进行了不同土壤含水量和不同土壤密度要求的土样制备，得到了满意的结果。
With the increment of soil bulk density and water discharge rate, the movement of horizontal wetting front increased and the vertical movement decreased.
土壤质地、滴头流量、土壤密度以及供水方式等因素对于点源入渗有着一定的影响。
The soil carbon density change model is based on regression analysis of the carbon densities of different soils.
对不同土壤类型碳密度随时间的变化，用回归分析的方法，建立土壤碳密度变化模型。
Using the latter, with the correlativity of soil 'density and the velocity of the Rayleigh surface wave, we can obtain the compaction of the subgrade.
后者则是用已得到的各层瑞雷波速度值，利用土密度与瑞雷波速的相关关系计算各层的压实度。
The relationship between nitrate fertilizer application and cultivated conditions such as soil fertility, preceding crop, plant density and irrigation etc.
本文对马铃薯经济施肥量与土壤、前作、密度、灌溉等栽培条件的关系进行了定量研究。
In control condition of the growth chamber analyzing the influence of inoculum density, soil water matric potential and soil temperature on mortality of pepper caused by p.
在生长箱内控制条件下分析测定了接种体密度、土壤水分基质势和土壤温度对辣椒疫病死苗率的影响。
Spore density was also significantly correlated with soil available n.
孢子密度与土壤速效氮呈显著正相关。
The results of this analysis showed a significant correlation of water uptake rate with soil profile water content and root weight density.
结果表明：紫花苜蓿根系吸水速率与土壤剖面含水量和根重密度密切相关。
Soil texture, bulk density and water applied methods are critical factors influenced point source infiltration.
土壤质地、滴头流量、土壤密度以及供水方式等因素对于点源入渗有着一定的影响。
Standardization of crop irrigation using the agrohydrological characteristics, such as texture, bulk density, soil moisture under the lowest water capacity and wilting moisture is investigated .
用土壤的农业水文学特征，如土壤质地、土壤容量、最低田间含水量和萎蔫下的土壤含水量对作物灌溉的规范化进行了研究。
After remolding expansive soil disintegration characteristics were controlled by pretest water content in soil sample and dry density of soil.
膨胀土经过重塑后其湿化性主要受试前含水量和干密度控制。
The main drives of succession include canopy density of rubber forest, management, climate, soil condition and the biological properties of vegetation.
演替驱动力主要有：胶林郁闭度、胶林抚育管理措施、气候和土壤条件以及胶林植被本身的生物学特性。
Some data indicate that the soil organic carbon density of paddy soil is higher than that of dry cropland soil in China, and has an increasing tendency over the last 20 years.
目前有资料表明，我国水稻土具有比旱地土壤较高的表土有机碳密度，且近20年来存在着升高的趋势。
Subsoil tillage was an effective way to improve and utilize the compact soda-alkaline land with high soil bulk density.
深松措施可作为土壤紧实、容重较高的苏打盐碱土改良与高效利用的有效耕作方式加以实施。
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