查询词典 water and soil

The stem flow of spruce and larch had acidulation on the soil, but the soil around the bole of spruce didn't present intensive acidity (the lowest pH of water and KCl immersion were 5.13 and 4.79, respectively), so the acidulation of stem flow is not the direct reason of spruce death.

虽然两树种树干径流对土壤均产生了酸化作用，但由于云杉树干周围土壤PH并没有出现较强的酸性（水浸pH下降到5.13，盐浸pH下降到4.79），因此，还不能认为云杉的衰退死亡与树干径流的酸化作用有直接关系。

Research on relationship between crop drought and soil water retention and supply characters in hilly red clayey soil.

低丘红壤作物易旱与土壤持水供水特性的关系。

The article introduces and regards cement as the main pharmaceutical of the solidification pharmaceutical, through the purpose-built deep layer mix machinery, mix solidification pharmaceutical and ground soil by force, make the soft soil harden into a treatment method of ground with globality, water and stability and body of a pile of certain intensity.

1深层搅拌法概述深层搅拌法是用于加固饱和软粘土地基的一种方法，它是利用水泥、石灰等材料作为固化剂的主剂，通过特制的深层搅拌机械，在地基深处就地将软土和固化剂强制搅拌，利用固化剂和软土之间所产生的一系列物理化学反应，使软土硬结成具有整体性、水稳定性和

Four groups of experiments with different level--indoor simulation experiments, lysimeter experiments, pot culture experiments and field plot experiments-- were carried out to systematically study the environmental effects following the application of fermentation sludge to farmland in Tianjin area, which include soil salinity and potential contamination on ground water, and to primarily investigate the fertility of NovoGro in agricultural soil.

本论文通过四组不同层次的实验—室内模拟实验、渗滤实验、盆栽实验和小区实验，首次对酿造污泥农业利用可能产生的环境影响：1NovoGro对土壤的盐分效应；2NovoGro对地下水的潜在污染，进行了比较系统的研究，同时对NovoGro的肥效特性也做了初步的探讨。成功地解决了制约酿造残渣在天津地区农业利用的关键问题，为酿造污泥的综合利用提供了科学的依据。

Using quantification theory Ⅰ, relations of soil water and qualitative factors such slope degree, direction, position, and soil in Wangjiagou Gully were analyzed.

运用数量化理论Ⅰ方法，对王家沟小流域土壤水分与坡度、坡向、坡位和土壤等定性因子进行分析。

It also simulated to calculate runoff and soil loss in the beginning year of soil and water conservation.

4完成了对延河流域生态服务价值的测算。

Overall. vegetation was unstable, floristic composition was dominated by adversity-resistant species, and annual species had a higher ratio in this region. The dominant soil particle was sand and soil water and other nutrient contents were low. The eco-environment was fragile and erodible.

总体上看，该地区植物群落多以耐瘠薄性强的植物组成，一年生植物比例较高，植被不稳定，土壤组成主要以砂粒为主，土壤含水量低，养分贫瘠，环境脆弱，易产生风蚀、沙化。

The observation of the CO2 concentration and hydrogeological temporal change in different sites and depths indicates:①The seasonal change in soil CO2 concentration can be reflected from the hydrochemistry of spring and soil water;② The intensity of corros...

对不同部位不同深度的土壤CO2体积分数进行了野外监测，并利用多参数自动记录仪监测了泉水的水化学，揭示了CO2体积分数的变化规律。

Based on a thorough investigation of the engineering geological condition for the reservoir region of the Huizhou Pumped Storage Power Station, the in-situ trial pit water injection test, boring water injection test, and water pressure test were performed to study the permeability of rock and soil mass.

摘要在对惠州抽水蓄能电站库区工程地质条件进行详细调查的基础上，采用现场试坑注水和钻孔注水、压水试验等方法了解岩土体的透水性。

The main work of this paper is as follows:(1) Ignoring other small content and indissoluble salt, only considering sodium chloride and sodium sulphate, and suggesting these is no Chemical reaction between soil and salt, the phase change rule of salty soil follow the phase change rule of 〓 ternary water and salt system, which obey the phase equilibrium theory.

本文主要进行了以下研究工作：(1)在只考虑NaCl与Na〓SO〓两种易溶盐，而忽略其它在盐渍土中含量与溶解度均较小的盐类，并假定NaCl与Na〓SO〓不与土颗粒发生化学反应的基础上，盐渍土的相变规律实质上是〓三元水盐体系的相变规律，并服从相平衡理论。

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。