The results showed that:(1)The soil water infiltration rates in layer A were higher than those in layer B for all kinds of vegetation,which were remarkably related to soil porosity.
结果表明:(1)各森林植被类型林地A层土壤渗透速率和孔隙度均高于B层,土壤渗透速率与土壤孔隙度之间存在显著相关关系。
Soil macropore and its studying methodology.;
土壤大孔隙及其研究方法
The soil macropore could contain some preferential flow, which would lead to groundwater pollution.
土壤大孔隙可导致优先流从而引起地下水污染,植物根孔属于土壤大孔隙的一类,它在导致优先流引起的地下水污染方面有特殊的作用。
By analysis of sampled soil physical properties,compared that with bare area,the results show that: there is no certain change pattern between soil bulk density and soil porosity;the bulk of soil bulk density gets larger and the soil gets deeper,while the soil bulk density gets smaller at certain depth and the capability of sluice falls.
以徐州市三环路内4个城区的公园绿地土壤为研究对象,通过对其土壤的物理性状取样分析,同时与无植被覆盖的裸地进行对比,结果表明:该城区公园绿地土壤容重与孔隙度随时间无确定的变化规律;该土壤容重开始随土壤深度增加而减小,某一深度以后逐渐增加,而土壤孔隙度随土壤深度增加而增加,某一深度以后逐渐减小,土壤蓄水保水能力降低。
Plastic mulching or intercropping combined with pruning and fertilization not only increased the biomass yield of Japanese honesuckle ( Lonicera japonica Thumb) but also improved its water- and soil-conserving effect, for such management technologies decreased soil bulk density, increased soil porosity and enhanced the water-holding capacity of the soil.
对金银花采取地膜覆盖、间作的种植模式,结合修剪、施肥的管理技术,可有效降低土壤容重,增加土壤孔隙度,提高土壤贮水量,不仅增加了金银花的生物学产量,而且提高金银花的水土保持效益。
The results showed the evident existences of the vertical spatial variability of porosity in soils on mm-scale; the variability of the cultivated soil originated from a prairie soil was higher than that originated from a forest soil, and the variability has a negative relation with the soil porosity but a positive relation with the soil depth with the tillage horizon; however, the variabi.
结果表明,土壤孔隙度在 mm尺度上存在较为明显的变异;不同的土壤变异性存在一定的差异;变异性与土壤孔隙度呈反向关系,与土壤深度呈正向关系;在耕作期,变异性随时间呈现一定的波动趋势。
To study the main microbial processes contributed to N2O emission,enrichment technique was used to isolate autotrophic nitrifiers,heterotrophic nitrifiers/aerobic denitrifiers and anaerobic denitrifiers from vegetable soil,and two re-inoculating soils autoclaved were incubated at 30 ℃ under 30%,50%,100% WFPS(Water-f.
本研究主要是通过微生物分离手段加富培养菜园土中的硝化菌、厌氧反硝化菌和异养硝化/好氧反硝化菌,并在30%、50%和100%3种土壤充水孔隙度(指土壤体积含水量与总孔隙度的百分比,V/V)水分条件下进行无菌菜园土反接种培养实验,研究了不同水分条件下、不同土壤微生物类群的产N2O量。
Design and Realization for Network Model Reconstruction of Soil Pore
土壤孔隙网络模型的程序设计与实现
We may have too large an internal surface area where the particles are too fine and the pore space may be filled up. Pore space depends on the size and arrangement of the particles.
如果土粒太小，土壤内表面积就会过大，致使土壤孔隙被阻塞。孔隙取决于土粒的大小与排列。
Network Model Reconstruction of Soil Pore Based on the Serial Digital Images
基于序列图像的土壤孔隙网络模型构建
Fractal Character of Soil Void in Artificial Chinese Prickly Ash Forest in Eastern Guanzhong Area
关中东部人工花椒林土壤孔隙的分形特征
"Some soils lack porosity, so that they' re hard to cultivate, slow to absorb water, and inclined to puddle. "
有的土壤孔隙少，所以耕作起来很费劲，吸收水分也慢，而且容易粘闭。
The Laboratorial Study and Academic Mathematics Model of a New Pore Water Pressure Instrument;
土壤孔隙水压力检测系统试验研究及关系模型建立
Comparative Study on Predicting Porosity by Different Roughness Indices
不同粗糙度尺度下预测表层土壤孔隙率量化指数比较研究
Comparative Study on the Soil Water Retention Curve between Macroporous Soil and Homogeneous Soil
大孔隙土壤与均质土壤水分特征曲线比较研究
The total porosity and the aerate porosity decrease after the rain while the faster available porosity and the slow available porosity increase .
降雨后土壤的总孔隙度下降，通气孔隙下降较明显，同时速效孔隙和迟效孔隙增多。
Gums and mucilages can reduce the size of some of the soli pores.
细菌胶和粘胶会使某些土壤的孔隙减
Aeration porosity is more sensitive than total and capillary porosity to reflect soil compaction degree.
与总孔隙度和毛管孔隙度相比,通气孔隙度在反映土壤压实时更为敏感。
The compression of the soil under the applied stresses would force some water out of the voids.
施加压力压缩土壤会使一些水从孔隙中排出。
Study on mechanism of water and solute transport in soil with macropores;
水及溶质在有大孔隙的土壤中运移机制研究
Effects of Soil Cornstalk Fertilization on Nutrient Leaching in Soil Macrospore Flow;
秸秆培肥土壤对大孔隙流中养分淋失的影响
Long-term Tillage Effects on Pore Size Distribution within Soil Aggregates
不同粒径土壤团聚体中孔隙分布特征的影响
The Effect of the Infiltration Characteristics Under the Different Macropores' Depth in the soil
不同大孔隙深度对土壤水分入渗特性的影响
Present Research Situation and Developing Trend for the Soil Macropore Flow Experiments and Model
土壤大孔隙流试验和模型研究现状与发展趋势
Study on spatial-temporal changes of soil bulk density and soil porosity of alpine meadow in Tianzhu
天祝高寒草甸土壤容重与孔隙度时空变化研究