土层

根系平均直径以0～10cm土层内最大，增施肥料对根系平均直径的影响不大。

The mean root diameter was biggest in 0-10 cm solum , but it had little effect when adding fertilizer application .

每一土层中均有大小不等的笋芽或冬笋，其中基围5～10cm的数量最多，约占50%；

There are all sizes of shoots in each solum , most of them have a base-girth of 5 ~ 10 cm .

这片玉米地下伏土层中出土了一个有考古价值的古墓。

An archaeologically valuable ancient tomb was unearthed in the underlying soil of this corn field .

从垂直分布来看，随土层深度增加pH值增大。

The soil pH value increased with increasing soil depth in soil vertical profile .

土壤有机C、N的含量变化主要发生在0-40cm土层。

The change content of soil organic C and N mainly occurred within soil depth of the 0-40 cm .

西安地区不同厚度土层土壤CO2释放量的差异研究

A study on the difference of co_2 released from soils with different thickness in Xi'an

林地与裸地土层中CO2浓度随土层深度增加而增高。

CO_2 concentration increased with the soil depth .

沿线地基土上部土层中的前期固结压力p′c值大于覆盖土压力，处于超固结状态。

The preconsolidation pressure in the upper soil layer is larger than the existing overburden pressure , and the soil is in an overconsolidated state .

运用坍塌平衡法计算，应考虑土洞平面形状的影响，同时土层的内聚力c不能被忽略；

The plane shape of soil cave should be taken into account in using ' collapse balance method ' , in the meantime , the cohesion c should not be neglected .

对照区0～10cm土层土壤有机C含量显著大于各放牧处理，而各放牧处理间差异则不显著。

Soil C in 0 ~ 10cm depth under control treatment was higher than those of other three grazing treatments .

土壤剖面颜色呈黑-黄-红变化的次生黄红壤的黄色土层（B1）粘粒只含针铁矿，红土层（B2）含有针铁矿和赤铁矿。

Both goethite and hematite were pre-sent in the clay of red B_2 horizon in the secondary yellow-red soil with black-yellow-red color profile but only goethite in the clay of yellow B_1 horizon .

杨树人工林下的A、B两个样地的土壤有机质、全N和速效N含量在2cm土层中较高；

The organic content , total N and alkali-hydrolysable nitrogen content of Populus spp plantations plot A and B is higher in the 2 cm soil layer ;

影响各污染物去除效果因素的主次为，水力负荷周期、EM投加量，土层厚度。

The influence factors for removal efficiency sorting by priority are hydraulic loading period , the appending quantity of EM rejuvenation , soil depth .

以此计算了夹有软弱土层的TI层状场地对入射P-SV波的动力响应，计算结果表明，软弱土夹层场地与一般场地的动力响应特性有区别。

The results show that there are differences between the response of strata with soft soil layer and normal strata .

水稻基肥（碳铵）机深施及机前全层湿润施用后，氮肥绝大部分进入土层，并迅速呈NH4+态被土壤颗粒吸附，随水流失进入稻田周围水体的N素比耙面肥处理减少60%-70%。

After deep application and layers wetness , most of nitrogen became NH4 + and adsorbed by soil . Therefore N in surrounded water was 60 % ~ 70 % less than normal fertilization .

Mn含量随距河流距离的加大而减少；Zn含量在各土层样地带间变化较小。

The concentration of Mn decreases with the increasing distance from away river ; the concentration of Zn show less variation among all layers of the plot belt .

免耕0～10cm土层由23种真菌构成，TrichodermaViride和T.koningii为优势种；

23 species in No-tillage 0 ~ 10 cm soil and Trichoderma viride and T.

采用将配体含氨基的镍催化剂直接负载在酸化蒙脱土（B型）和酸化/有机化蒙脱土层间得到的催化剂（C型），其负载量较高。

The other two supported catalysts by intercalation of acidified MMT ( B ) or acidified and organic MMT ( C ) with nickel complex whose ligand containing amine group had high load of Ni ( II ) .

分析了轨道随机不平顺激扰下车辆和轨道结构振动响应。（3）运用有限元软件ANSYS建立了隧道土层建筑物三维有限元模型。

The vibration response of vehicle and track structure excitation was analyzed under the excitation of track random Irregularity . A tunnel-soil-building 3D FEM model of was established by ANSYS .

当原始土层厚度达到10m以后，质量浓度变化不大。

The mass concentration does not change greatly when the thickness of the original soil layer is more than 10 m.

落叶松人工林下的C、D和林缘G3个样地在各土层中速氮值均较低，而全磷值较高；

The alkali - hydrolysable nitrogen of Larix gmelini plantations plots C , D and G are lower in each soil layers , but the total phosphorus value are higher ;

在40～100cm土层中，4种农业土地利用类型土壤中SOC和TN含量差异不显著。

There were no significant differences in SOC and TN concentrations among the four land use types through the 40 ~ 100 cm soil profile .

各株龄白沙蒿土壤中pH随土层深度的增加而升高，表层土壤（0-10cm）pH最低；相同土层随株龄增加pH下降。

PH increased with the increment of soil depth , with the minimum on surface soil ( 0-10cm ), pH also decreased with the increment of planting years at the same soil layer .

等于或者大于200kg/hm2的施氮量将超过小麦和多花黑麦草植株吸氮量，导致土壤不同土层硝态氮的大量累积，构成N淋溶的潜在危险。

N supply equal to or greater than 200kg / hm2 to exceed the application rate of wheat and annual ryegrass plant N uptake , It would resulted nitrate accumulated a lot in soil of different layers to form N leaching potential danger .

森林下垫面土壤CO2通量与土壤温度显著相关，与6cm深度土层温度相关系数最大。

Soil CO2 flux from the forest floor was strongly related to soil temperature and had the highest correlation with temperature at 6-cm depth of soil .

通过对-5℃冻结黄土的蠕变CT扫描发现，在单轴蠕变过程中土层密度和CT值在加荷瞬间增加后持续减小，冻土的体积随时间的发展而持续增加；

Through CT scanning , it was found that the density and CT value of soil layer decreased continuously after instantaneous increase at the beginning of loading and the volume of frozen soil increased continuously with time in uniaxial creep process of frozen soil .

当断裂位错1～3m时，土层开始出现裂缝，其破裂高度均在20m以内；

And ( 3 ) under way of bedrock offset 1-3 m , the fracture inside overburden soils appears and all fracture heights are less than 20 m.

利用GDS三轴仪对工程场地内的原状土样进行了室内动力试验，获得了各主要土层的动弹性模量与阻尼比。

The shear modulus and damp ratio characteristics of typical strata are achieved in the dynamic test , based on GDS triaxial dynamic system .

且0～20cm土层的硝酸盐含量普遍高于同时期20～40cm土层的硝酸盐含量。

0 ~ 20cm soil layer 's nitrate content was higher than the correspondent 20 cm ~ 40 cm soil layer 's .

从垂直变化看，均随土层深度增加而显著降低（P0.05），均可将其土壤层次划分为表层急变层、水分利用层和水分稳定调节层。

Viewed from the vertical change , the soil water content decreased with the increasing of soil depth ( P0.05 ) . It could be divided into the surface soil layer , water use layer and water stability and regulation layer .