助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   water 在 农业基础科学 分类中 的翻译结果: 查询用时:0.152秒
图标索引 在分类学科中查询
所有学科
农业基础科学
环境科学与资源利用
水利水电工程
资源科学
农业工程
农作物
农艺学
化学
林业
更多类别查询

图标索引 历史查询
 

water
相关语句
  水分
    Study on Runoff and Water Balance Model under Mechanized Conservation Tillage for Dryland Farming
    旱地机械化保护性耕作径流与土壤水分平衡模型试验研究
短句来源
    The Experimental Studies on Water Relations of Soil-Plant System
    土壤—植物系统水分关系的试验研究
短句来源
    Research on Soil Water Character and Crop Water Simulaton Information System in Hilly Red Soil
    低丘红壤水分特性和农田作物水分模拟信息系统研究
短句来源
    Study on Fast-Measurement of Soil Water Content and Application Technology
    土壤水分快速测量方法及其应用技术研究
短句来源
    Experimental Study on Transport of Phosphorus and Water in Soil from Sloping Land
    坡地土壤磷素与水分迁移试验研究
短句来源
更多       
  含水量
    The Beck Formula Revision for  ̄(222)Rn Escape and the Water Content in the Indirect Measurement of Gamma Radiative Dose Rate from Soil
    土壤γ辐射剂量率间接测量中的~(222)Rn析出和含水量修正
短句来源
    The results showed: During the whole maize development,the soil water content in plough layer by cover residue increased by 0.58%~4.76% compared to conventional tillage.
    结果表明:秸秆覆盖在整个玉米生长发育过程中耕层土壤含水量比传统耕作提高0.58%~4.76%,平作土壤含水量高于垄作。
短句来源
    In 0~20 cm layer the soil water content by CS and covering treatments,were both higher than by non-residue treatment.
    在0~20 cm土层内覆盖处理的土壤含水量均高于无秸秆处理。
短句来源
    the soil water content of shifting dune(1.27%~1.73%) increased from the foot of dune to the crest,while the fixed dune(1.75%~1.11%) was reverse. Additionally,by using standard deviation and variation coefficient,the vertical layers of soil water content were divided into three layers,i.
    流动沙丘含水量(1.27%~1.73%)从上部到下部依次升高,而固定沙丘(1.75%~1.11%)则与此相反;
短句来源
    The results showed that the soil water content below 60 cm soil layer decreased with the increase of fencing time,the soil water content decreased from 25.62~29.84 g.
    结果表明,随着封育年限的增长,沙地60 cm以下各层的土壤含水量逐渐减少,土壤含水量由25.62~29.84 g.
短句来源
更多       
  “water”译为未确定词的双语例句
    Study on the Law of Soil and Water Losses and Control Measures in Red Soil Watershed
    红壤小流域水土流失规律及防治措施的研究
短句来源
    Sediment Yield and Decision-making Support System for Soil and Water Conservation in Watershed with GIS
    基于GIS的流域产沙及水土保持决策支持系统研究
短句来源
    A Real-time Study of Monitoring Crop and Soil Water Condition Based on Eddy Correlation Technique and Information of Remotely Sensed Canopy Temperature
    基于涡度相关与冠层温度遥感信息的实时农田墒情监测研究
短句来源
    Study on Regional Water Deficit Monitoring Method Using Remote Sensing Based on Vegetation Evapotranspiration
    基于植被蒸散法的区域缺水遥感监测方法研究
短句来源
    A Study on Water Cycling and Water Use Efficiency of the Plantation SPAC in the Southern Loess Plateau
    黄土高原南部人工植被SPAC系统水分循环模式和利用效率研究
短句来源
更多       
查询“water”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  water
The water-soluble glucan was obtained from Pleurotus florida fruit bodies by hot water extraction, ethanol precipitation, DEAE cellulose dialysis and Sephadex G-75 gel filtration.
      
Water and methanol extracts prepared from the stem of C.
      
Berberine present in the water and methanol extract was determined by RP-HPLC.
      
Methanol extracts demonstrated better inhibitory effects on cultured L929 cells followed by purified berberine from cell suspension cultures and water extracts.
      
The rolling development model of ecological economy combined water conservancy construction with schistosomiasis control
      
更多          


The present paper reports studies on the relative rate of decomposition of nine different oil cake-meals [soybean, peanut, sesame, rape seed, cotton seed(with and without hull), chinese tallow seed (with and without hull)]. In the course of decomposition of the different oil cake-meals, freguent measurement were made of the quantity of evolved CO_2 gas, and amount of the NH_4~+, NO_3~-, and NO_2~- nitrogen formed at the given intervals of the day. These measurement served as indices of the intensity of decomposition...

The present paper reports studies on the relative rate of decomposition of nine different oil cake-meals [soybean, peanut, sesame, rape seed, cotton seed(with and without hull), chinese tallow seed (with and without hull)]. In the course of decomposition of the different oil cake-meals, freguent measurement were made of the quantity of evolved CO_2 gas, and amount of the NH_4~+, NO_3~-, and NO_2~- nitrogen formed at the given intervals of the day. These measurement served as indices of the intensity of decomposition and rate of ammonification and nitrification of the oil cake-meals that may be occur in the soil. These studies were performed in the laboratory, under room temperature condition of the summer season. All cakes were ground into meals to such particle size as to pass through a 20-mesh sieve. The cake-meals were separately mixed with cultivation soil in the proportion of one part of cake-meal to hundred parts by weight of soil. The soil used was of alluvial origin, low in organic matter and somewhat sandy in texture. It was found that decomposition of the cake-meals began soon after their application to the soil. The daily evolution of CO_2 reached its maximum for about one week. Immediately after that, the daily evolution of CO_2 declined rapidly to a such lower level and attained a rather steady declining rate after about two weeks. The trends were common in character irrespective of the kind of the cake-meals. Among the organic constituents of tile cake-meals that underwent into decomposition in the early days, nitrogeneous organic compou ads seemed to be of major importance. The production of ammonium compounds as a result of ammonification followed a trend similar to that shown by the evolution of CO_2. The maximum rate of ammonification was noticed sometime before the evolution of Co_2 had reached a maximum. The positive correlation existing between the total nitrogen content of the oil cakes and the rate of ammonification was evident. Other factors, however seemed to be also affecting the status of transformation of Nitrogen compounds. Nitrate compounds began to appear soon after ammonification had proceeded to an appreciable degree. In the course of decomposition their accumulation in the soil increased steadily with the time. Small amounts of nitrites were found under the experiment conditions which were characterized by low moisture content (25%) of the soil and meal mixtures. From the quantity of the total available nitrogen accumulated at different intervals in the course of decomposition as in the case here given, it seemed that some nitrogen might be lost through volatilization of ammonium compounds, since the soil was alkaline in reaction (the soil here used had a PH value of 7.2) Soaking the cake meals with water, lime-water, or straw-ash extract as sometimes practiced by the local farmers in some districts in Chekiang province brought about the effect of hastening ammonification and nitrification processes. But, gain in readiness of availability of the meals by this hastening effect might not compensate for the loss in total amount of available nitrogen formed. The loss was particularly evident when the cake-meals were pretreated with lime-water or straw-ash extract. It is believed that the alkaline reaction of the treated cake-meals accounts for this loss. The relative readiness of decomposition of the different oil cake-meals followed in descending order: soybean, sesame, peanut, Cotton seed (without hulls)>Cotton seed (with hulls), rape seed>Chinese tallow seed (with and without bulls). Similarly, the relative total amount of available nitrogen (including ammonium and nitrate nitrogen) formed during decomposition shows in the following order: soybean, peanut, sesame, chiness tallow seed(without hulls)>Cotton seed (with and without hulls)>rape seeds>Chiness tallow seed (with hlls).

研究了浙江省施用的九种主要餅肥在土壤中分解的情况,各种餅肥都經磨碎,并通过20孔篩。实驗証明,在夏天的温度下,餅肥施入土壤后即迅速分解,它的分解最盛时期是在一星期左右,此后即迅速下降,到二星期后,即漸趋穩定。餅肥施入土壤后,铵态氮的大量發生是在一星期以內,此后即迅速降低,轉化成硝酸态氮。硝酸态氮在一星期到二星期的时間内开始大量發生,到二星期后就漸趋穩定。土壤中有效态氮总量在各个形态轉化的过程中,有顯著的減少趋势。餅肥在施入土壤前用石灰、草灰或水处理一星期,可提早土壤中有效氮的發生,其中單用水处理的效果尤其好。实驗証明,用石灰或草灰处理餅肥,使有效态氮大量損失,而用水处理則沒有这种情况。在本实驗的条件下,各种餅肥的分解速率依次为:豆餅、芝麻餅、花生餅、棉仁餅>棉籽餅、生菜餅、熟菜餅>桕餅、青餅。各种餅肥中氮素化合物转化后所產生的有效态氮总量依次为:豆餅、花生餅、芝麻餅、青餅>棉仁餅、生菜餅、棉籽餅>熟菜餅>桕餅。

On the basis of a series of soil survey made in the Hwaiho Valley(淮河流域),a plan on land classification for this area has been proposed asreferences for making arrangement in establishing irrigation systems,inland utilization,as well as in soil improvement.Three fundamental principles are considered to be important on landclassification,i.e.(1)the practices in soil improvement must be consideredin connection with those in land utilization,(2)the land classificationshould be considered on land utilization both...

On the basis of a series of soil survey made in the Hwaiho Valley(淮河流域),a plan on land classification for this area has been proposed asreferences for making arrangement in establishing irrigation systems,inland utilization,as well as in soil improvement.Three fundamental principles are considered to be important on landclassification,i.e.(1)the practices in soil improvement must be consideredin connection with those in land utilization,(2)the land classificationshould be considered on land utilization both of the present day and of thefuture time,and(3)the main factors and criteria adopted for landclassification must be appropriate to the particular regional conditions.The main factors used in land classification of the Hwaiho Valley aresuggested as follows:(1)soil types together with their physical andchemical properties,(2)geomorphological characteristics,(3)depth andchemical composition of ground water,(4)present status and furtherimprovement in drainage and irrigation,(5)present status in land utiliza-tion and estimate on soil productivity,and(6)fundamental problems inthe promotion of soil fertility.According to the factors just mentioned,a system of land classificationhas been proposed for the Hwaiho Valley where the land may be classifiedinto seven main types.

淮河流域土壤改良利用分区的目的是供水利方面选择灌区和初步计划灌溉设施及农业方面确定农业区划和改进农业技术措施的参考。分区的基本原则有三:第一,土壤改良必须与利用规划结合,其次分区应注意综合性、长远性和现实性,第三划区的主要因素和标准必须符合地区的特点。淮河流域土壤改良利用分区的主要参考因素为(1)土壤发生分类和主要理化性质,(2)地貌,(3)地下水的深度、矿化度及化学组成,(4)灌溉排水现状及需要改进的情况,(5)土地利用现状及对生产的评价,(6)提高土壤生产力的关键性问题。

The roles of the natural development and some properties of the soilsin this area are briefly discussed as follows:The soils are saline and calcareous in nature,in which over 70% of thetotal soluble salts are sodium chloride.Slight to moderate alkalinizationmay be developed,while the total soluble salt contents exceed 0.2%;butgenerally,there is no NaCO_3 present.The ground water table in this areais usally high,and the quantity and constituents of the salts in groundwater are directly varied with and influenced...

The roles of the natural development and some properties of the soilsin this area are briefly discussed as follows:The soils are saline and calcareous in nature,in which over 70% of thetotal soluble salts are sodium chloride.Slight to moderate alkalinizationmay be developed,while the total soluble salt contents exceed 0.2%;butgenerally,there is no NaCO_3 present.The ground water table in this areais usally high,and the quantity and constituents of the salts in groundwater are directly varied with and influenced by that contained in the abovesoils.The saline and alkali properties of soils in this area are originatedfrom the parent materials,through the action of the sea water when theywere deposited.As soon as the sea water ceased to affect,the soils as wellas the ground water are gradurally desalinized by natural leaching and thisprocess will be strengthened by the biological activities.As the desalinization of the soils is proceeded further,the ratio ofNa~+/Ca~(++)+Mg~(++)in the soil solution decreased and the amount of the exchan-geable Na on the soil colloidal complex is finally lowered.It is evident thatdesalinization also introduces the dealkalinization of the soils in this area;there is no hazard of strong alkalinization of the soils taken place throughleaching.

本文简要地说明了江苏省沿海地区盐渍土壤的自然发生过程及盐渍特性转化的规律,文中主要论点,可初步归纳如下:1、本区域的土壤,发育于盐渍性的冲积母质,土层中富含以氯化钠为主的可溶性盐类,并呈一定的“碱性”。土壤碱性表现在两方面:一方面是土壤胶体表面存在有较多的吸附性钠,另方面表现在本身具有较高的pH 值。2、在自然发生过程中,土壤盐渍性为地质过程遗留的影响;随受自然降水淋盐,河沟排水排盐及生物作用的影响,开始“脱盐、脱碱”和肥力积累过程,发育成为本区内现存的各种不同盐渍程度的土壤。3、随着土壤脱盐作用的进行,土壤盐渍的组成在变化;主要是可溶性盐阴离子中钠离子的含量淋失较速,最后降低了土壤溶液中Na~+/Ca~(++)比率。由于这种盐渍组成的改变,土壤胶体上吸收性Na~+也相应的降低,从而导致土壤的脱碱作用。因此本区土壤的脱盐不致引起土壤碱化。4、在自然发生过程中,本区域盐渍土的脱盐过程,一直是在潜水位较高的情况下进行的。在脱盐过程中,潜水位经常在临界水位以内,为本区自然脱盐过程中,最大特点;潜水动能和土壤的脱盐过程,存在着许多内在的联系。在一定地区内,一定盐渍程度、盐渍特性的土壤,则常有和其相适应的矿化潜水类型。...

本文简要地说明了江苏省沿海地区盐渍土壤的自然发生过程及盐渍特性转化的规律,文中主要论点,可初步归纳如下:1、本区域的土壤,发育于盐渍性的冲积母质,土层中富含以氯化钠为主的可溶性盐类,并呈一定的“碱性”。土壤碱性表现在两方面:一方面是土壤胶体表面存在有较多的吸附性钠,另方面表现在本身具有较高的pH 值。2、在自然发生过程中,土壤盐渍性为地质过程遗留的影响;随受自然降水淋盐,河沟排水排盐及生物作用的影响,开始“脱盐、脱碱”和肥力积累过程,发育成为本区内现存的各种不同盐渍程度的土壤。3、随着土壤脱盐作用的进行,土壤盐渍的组成在变化;主要是可溶性盐阴离子中钠离子的含量淋失较速,最后降低了土壤溶液中Na~+/Ca~(++)比率。由于这种盐渍组成的改变,土壤胶体上吸收性Na~+也相应的降低,从而导致土壤的脱碱作用。因此本区土壤的脱盐不致引起土壤碱化。4、在自然发生过程中,本区域盐渍土的脱盐过程,一直是在潜水位较高的情况下进行的。在脱盐过程中,潜水位经常在临界水位以内,为本区自然脱盐过程中,最大特点;潜水动能和土壤的脱盐过程,存在着许多内在的联系。在一定地区内,一定盐渍程度、盐渍特性的土壤,则常有和其相适应的矿化潜水类型。在自然发生过程中,随土壤的脱盐和盐渍特性的转化,潜水似亦随之发生相应的淡化和化学性质的变化。二者转化趋势,大致相符。彼此间的关系,是互相依存、互相制约的,在不断运动的过程中,似先有土壤的脱盐,而生导向潜水的淡化;但就土壤脱盐的过程言,本身同时又是潜水淡化的结果。5、在土壤脱盐的过程中,土壤盐分的动能比较复杂,一方面是全区土壤不断地脱盐,另方面是在一定的条件下,又可产生局部地区土壤表层的盐渍化。前者为本区盐渍土壤自然发生过程的实质,后者为临时性现象。此种现象,最终亦必随同潜水的转向淡化而逐渐消除。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关water的内容
在知识搜索中查有关water的内容
在数字搜索中查有关water的内容
在概念知识元中查有关water的内容
在学术趋势中查有关water的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社