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water and soil相关的网络例句

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与 water and soil 相关的网络例句 [注:此内容来源于网络,仅供参考]

The results showed that the maximum height of the capillary water rise of layered soil was mainly determined by the sand soil texture, position, thickness and their mutual relationship, and they also were closer connected with other soil texture in the profile.

针对目前层状土体剖面夹层土质对毛管水分最大上升高度的影响存在较大分歧,以沙土夹层为例,从土坡水动力学的角度,通过实验和理论分析,分不同情况对层状土城的毛管水最大上升高度进行了系统研究。

It also carries on four levels of single-factor laboratory experiments with three sample soils: clay, cohesionless soil and sandy soil, concerning three elements: cement mixture ratio, age, water content in order to find out the contractibility under different test conditions, and also the permeability of locking surface between cement soil and concrete.

试验选择粘土,粉砂土和粗砂土三种土质,采用室内试块试验的研究方法,选择水泥掺入比、龄期、含水量三种因素,分别进行了四种不同水平的单因素试验,研究水泥土在不同养护条件下的收缩性,通过水泥土和混凝土咬合面渗透试验来检验两者咬合面的抗渗性。

A field trial was conducted in a greenhouse with soil affected by secondary salinization to explore effects of application of oil cake manure on soil available nutrients, water soluble salts and salt composition, and hence to evaluate feasibility of applying oil cake manure to ameliorate soils affected by secondary salinization, and predict possible consequences of the application of a large amount of oil cake manure in the greenhouse soil.

通过田间试验研究了施用油菜菜籽饼肥处理后,次生盐渍化温室土壤中的有效养分、水溶性盐分含量及盐分离子组成的变化,以评价施用饼肥改良次生盐渍化温室土壤的可行性以及在温室土壤上大量施用油菜籽饼肥可能出现的后果。

Straw application, whether straw mulch or incorporated straw with soil, increased the content of soil labile organic carbon and incorporated straw with soil as more beneficial to the increase of the contents of hot water-extractable carbon, potentially mineralizable carbon acid-extractable carbon, readily oxidizable carbon, particulate organic carbon, and light fraction organic carbon.

表施秸秆和混施秸秆均能使土壤活性有机碳含量增加或显著增加,混施秸秆较表施秸秆更有利于热水提取态碳、可矿化碳、酸提取态碳、易氧化态碳、颗粒有机碳和轻组有机碳含量增加,而可溶性有机碳和微生物生物量碳的变化与秸秆施用方式关系不大。

In different growth stage, the soil pondage of R, H and Z treatments was larger than C, especially in anthesis stage, which indicated that R, H and Z could inhibit the useless evaporation of soil water before anthesis and promote grain filling. Different tillage systems had different Effects on soil pondage.

在作物不同生育时期,尤其是作物开花期,旋耕、耙耕和免耕模式的土壤贮水量高于常规耕作处理,这说明这三种模式可抑制作物开花前土壤无效蒸发,有利于促进籽粒灌浆。

The P release contents in the runoff sediments of the lateritic red soil of granite, lateritic red soil of sand shale and limestone soil reached the maximum in 9,7and 12 days, respectively. The phosphorus concentration on 4, 1 and 5 days exceeded river acceptable DRP critical value, respectively; therefore, it had obvious influences to water eutrophication.

花岗岩赤红壤、砂页岩赤红壤和石灰岩土径流沉积物中磷释放量达到最高所需时间分别为9天、7天和12天,磷浓度分别在第4天、第1天和第5天超过河流可接受的可溶态活性磷的临界值,因此土壤径流沉积物中磷的释放对水体富营养化具有明显的影响。

Using the survey data of several indexes as well as field experimental data of soil hydrology of microbiotic crusts in artificial vegetation-fixed sand dunes in Shapotou area, the impacts of microbiotic crusts on soil hydrological processes which included the penetration, interception and evaporation processes of precipitation were examined, and their mechanisms were also studied. The security problem of vegetation-fixing system due to the changed soil water environment in fixed sand dune area was analyzed further.

本文在上面的立意下,我们对沙坡头人工植被固沙区对微生物结皮的若干指标进行了详细的调查和试验,并安排了一系列微生物结皮土壤水文过程试验,从不同的角度揭示了微生物结皮在降雨渗透、拦截和蒸发过程中的作用,及其对降水在沙丘土壤剖面中的水分分配过程和格局的影响,并进一步分析了微生物结皮对固沙区土壤水环境的影响和植被固沙体系的安全问题。

1 Water stored in soils. 2 One of the most important elements involved in pedological processes and plant growth. There are three basic form-: water adhering in thin films by molecular attraction to the surface of soil particles and not available for plants is termed hygroscopic water. b Water forming thicker films and occupying the smaller pore spaces is termed capillary water.

储藏在土壤中的水分,2)在土壤过程和植物生长中最重要的元素之一,有三种基本形态-:(s:a 藉分子间引力以薄膜形式附著在土壤颗粒表面的水分,不能被植物利用,称为吸湿性水, b形成厚的水膜填充在较小土壤气孔中,称为毛细管水。

Based on the project of high-embankment widening of highway, the water content and degree of compaction of foundation soil, filling and improved soil by lime were determined by means of indoor physicomechanical test. The centrifugal modeling tests were used to simulate increasing degree of compaction and improve soil by lime for coordinating deformation between new and old high-embankment widening.

针对高速公路拓宽工程高填方路段新老路堤拼接问题,通过室内物理力学试验确定地基土、素土填料及其石灰改性土在拼接路堤填筑时的含水量和压实度控制参数;利用离心模型试验手段,进行提高填料压实度和石灰改性措施下拼接路堤协调变形试验研究。

Based on the field experiment data of winter wheat blending irrigation by saline water in Nanpi Ecological Agriculture Experimental Station of the Chinese Academy of Sciences from 2002 to 2005, the effects of blending irrigation with mineralization of 0.84, 3, 4 and 5 g/L on the soil salification rate, soil sodium adsorption ratio of soil saturation extract as well as winter wheat yield and yield constitute factors irrigated were studied in order to determine upper limit of irrigation mineralization suitable for the location.

根据中科院南皮生态农业试验站2002~2005年的冬小麦微咸水混灌田间试验资料,以淡水为对照研究了矿化度分别为3、4、5 g/L的微咸水混灌对土壤积盐率、土壤饱和浸提液钠吸附比、冬小麦产量和产量构成因素以及水分利用效率的影响,从而确定适宜的灌溉水矿化度上限。

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