查询词典 sandy soil

In chapter 4, by analyzing the interchange of seepage water between overburden layer of weak permeability and sandy gravel bed, a short computer program for adopting weighting soil layer on the landside of dike is put forward, the optimal design schemes about combination weighting soil layer with inverted drainage works are studied.

第四章 通过分析堤基弱透水覆盖层与下卧砂砾层之间的渗流关系，创建了堤防背水侧盖重压渗的快捷计算模型并研制了相应的计算软件，提出了盖重压渗与反滤导渗相结合的优化设计方案。

The effect of nitrogen on of forage green naked oat in medium loam meadow chestnut soil was smaller than that in sandy chestnut soil.

追氮对滩地青莜麦秸秆中蛋白质含量的影响相对较小。

Soil moisture sensors based on principles of Time Domain Reflectometry,Frequency Domain and a new type of soil moisture sensor based on Standing Wave Ratio developed by China Agricultural University were evaluated with typical sandy loam,loess,peaty sand and leady loam from northern Germany.

该文针对时域反射法、频率分解法型土壤水分传感器和中国农业大学研制的基于驻波率原理的新型土壤水分传感器，在德国北部典型的沙壤土、黄土、含煤沙土及含铅壤土土样上做了试验。

In this paper, mechanical properties of the sandy silt and fine sand mixed with cement and fly ashes in different amounts after different ages curing are researched, and the effect of cementing is compared. Through pull-out tests and direct shearing tests of geogrid in various soil, the interface characteristics of between geogrid and soil are measured.

本文通过室内物性试验、直剪试验和单轴压缩试验研究了采用不同掺量的水泥、粉煤灰加固后的砂质粉土和粉细砂养护不同龄期后的物理力学特性，并对加固效果进行了比较。

It is best to remember that sandy type soil will not hold water as well, as soil that is more clay based.

最好是要记住，沙质土壤类型将不会是站不住脚的，以及，作为土壤，更是粘土的基础。

A soil wind erosion experimental plot was set up in the alluvial sandy land of old yellow river,which is in Xiajin County of Shandong Province,and the soil wind erosion quantity was tested with measuring scale method in the observation farmland shelter-forest network and the comparison place.

在山东省夏津县黄河故道冲积沙地建立土壤风蚀试验区，采用标尺法对3种网格的农田防护林和对照地的土壤风蚀量进行观测，测定结果表明：农田防护林网可明显减少风蚀损失，其中，130m×300m林网相对于对照减少土壤风蚀量81%，260m×300m林网相对于对照减少78%，300m×400m林网相对于对照减少75%，即随着网格面积的增加对风蚀量的影响越来越小。

The effects of different level bentonite on the content of soil water and soil organic matter in the field are studied with the sandy sieve tube method.

通过田间条件下砂滤管试验，研究了不同膨润土施用量及有机物料对砂土土壤含水量和有机质含量的影响。

The cores were collected in 60 different locations for each of three soil horizons along a 31 m transect on a sandy loam soil.

核心在60和的不同的沿着一31 m 的三土壤视界的每一个的位置中是镇定自若横切在一多沙壤土土壤上。

Based on a series of field investigation into psammophytic vegetation in Horqin sandy land and laboratory analysis of soil properties, the relationship between biodiversity and soil fertility characteristics were analyzed.

研究了科尔沁退化沙质草地不同沙漠化阶段物种多样性的变化，以及不同植被类型物种多样性与土壤肥力的相互关系。

To investigate the phenotypic plasticity in response to theheterogeneous soil water supply, ramet pairs of the species were subjected to heterogeneous watersupply by which either mother ramets or daughter ramets were in high or low soil water supply, respectively,in the Maowusu Sandy Land of Nei Mongol.

为了探讨拂子茅在异质性水分环境中的表型差异，在内蒙古鄂尔多斯高原的毛乌素沙地对拂子茅由母株、子株组成的分株对给予了高水、低水两种不同的异质性土壤水分处理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。