查询词典 water and soil

The result indicated that: land leveling in chernozem area should be based on the actual mode of production and soil characteristics to amend the local topographic surface; water conservancy works of farmland should adopt sprinkler irrigation system to save water; field road design requires to be based on field conditions in order to maximize conservation of the farmland; creating a shelter to mitigate the harmful wind, focusing on raising soil fertility, and changing tillage methods to improve soil.

研究结果：黑钙土地区土地平整应依据实际生产方式与土壤特性采取修改局部地形面方法；农田水利设施需采用喷灌系统进行节水灌溉；田间道路设计须根据实地条件与生产方式最大限度节约耕地；营造防护林以减缓有害风；注重培肥地力、改变耕作方式以改良土壤。

The study on the hardening mechanism of the soft soil with the materials shows that the hardening procedure can be divided into three stages:(1). Hydrating and dissolving stage, when material A and material B of the high-water-content and quick-setting materials respectively dissolve and balance in water.(2). Gel and consolidating stage, when the materials hydrate into calcium crystal and the ion exchange and aggregation of soil particles occur in an alkaline environment.(3). the structure developing stage, when the calcium crystals connect each other, absorb and crystallize the water around; the hydrate remnants, calcium hydroxide, carbonate continuously in water and in the air.

本文对高水速凝材料-软土硬化机理的研究表明，高水速凝材料-软土的硬化过程可分为三个阶段：①水化溶解阶段：主要为高水速凝材料的甲、乙料分别与水的溶解、维持平衡阶段；②胶凝固化阶段：主要为高水速凝材料的水化反应生成钙矾石晶体以及土颗粒在碱性环境中发生离子交换和团粒化作用；③强度增长阶段：钙矾石晶体相互连接，大量吸收周围环境中的水分，并将水分变成自己的结晶水；水化残余物氢氧化钙在水中和空气中发生碳酸化作用。

And then the effect of precipitation to water and heat character of soil is analyzed. The results indicate that the level which precipitation effect water and heat character of soil is different under different precipitation intensity. The affect degree of precipitation to surface physical variate is similar in winter and in summer, but the time that soil return to normal state is different, which in winter is longer than in summer.

其次分析了降水对荒漠土壤水热性质的影响，结果表明：不同大小的降水强度对地表物理量的影响不同；冬季和夏季相比，降水对地表物理量的影响差不多，但冬季的土壤状态的恢复时间要长得多；土壤湿度和反照率的驰豫期与降水都有很好的相关。

In this paper, based on the experimental data of maize, sunflower, Acacia confusa and Leucaena glauca under various treatments of air and soil temperature as well as soil water content, the effects of soil water content and temperature on plant root hydraulic conductivity were analyzed.

本文根据不同大气环境温度和土壤温度及不同土壤含水率处理条件下的玉米、向日葵、台湾相思、银合欢的试验资料，分析了土壤水分和温度以及土壤水分与温度共同作用对植物根系水分传导的效应。

The water-saving technologies in field are researched and concerned relatively weak,especially in the water deficit conditions,how to utilize the synthesis effects of water and fertilizer,increase the efficient utilization of soil water in saline soil,which are researched unprofound,the mechanism unclear,cant adapt the time requirements of agricultural water-saving.

田间节水技术的关注与研究相对薄弱，特别是在水分亏缺条件下，如何利用水肥综合效应，提高盐渍化土壤田间水分的高效利用率的研究还不深入，机理不清，不能适应农业节水的时代要求。

In the dissertation,Guizhou Province andGuiyang.Guizhou Province were selected as the research area and the model region.With theguidance of knowledge discover in database and soil erosion theory,remote sensing and GISwere used to study the senior and the primary method of obtaining the soil erosion message,which are based on unstructural knowledge discover in database.All the methods wereapplied to survey the soil erosion in Guizhou and to monitor the soil erosion change inGuiyang,all of the achievements enhanced the water-soil conservation in the research areaand the model region.

本文在知识发现和土壤侵蚀理论指导下，应用遥感和地理信息系统技术，选择贵州省为研究区，贵州省贵阳市为研究样区，进行了基于非结构性知识发现的土壤侵蚀信息提取方法初级方式和高级方式的研究，并把它们应用到研究区和研究样区的土壤侵蚀调查和土壤侵蚀动态监测工作中，促进了研究区的水土保持工作。

Results indicated that furrowing can make the soil of the ridge looser and soil porosity larger, so favoring the aeration and water permeability of soil, enlarging the storage capacity of soil water.

结果表明，起垄可使垄背土壤变得疏松，孔隙度增大，有利于土壤通气透水，增加土壤水库容。

The δ〓C values of spring water, soil water, soil CO〓 and soil respired CO〓 become mostly heavy with precipitation increasing.

总体而言，洞穴系统水样DICδ〓C值对月平均气温的响应不是很明显。

The author also analyzed the difference of soil moisture between furrow and ridge, inside and outside of film, wide and narrow furrow under water control condition, put forward the index of soil moisture for postponed irrigation of maize, expounded the influence of water control in later stage on products and soil moisture of monoculture Maize.

在控水条件下，分析了垄背与垄沟、膜内与膜外、宽沟与窄沟的土壤水分差异，提出了玉米推迟灌头水的土壤水分指标，并阐述了后期控水对单种玉米产量及土壤水分的影响。

The roots of spring-sown maize and summer-sown maize could touch with each other in relay-planting system, which made the roots competed for water and nutrition. Thus, more of the water and nitrogen in those soil layers were used, which led to the decrease of water and nitrogen in those soil layers.

玉米根系数量和TTC还原总量在剖面分布上均发生交叉，春、夏玉米间存在养分与水分的竞争，使根系所达到的区域土壤养分和水分利用量增加，从而使相应土层土壤全氮含量和水分含量下降。

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。