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soil acid
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  “soil acid”译为未确定词的双语例句
     The earthworm in Zn-added Cinnamon soil Acid brown soil andAquic brown soil growed at an average rate of -10%~-38%,-13%~-48% and -8%~-52% respectively;
     在加Zn 的处理的褐土、潮棕壤和酸性棕壤中蚯蚓平均生长率分别为-10%~-38%,-13%~-48%和-8%~-52%。
短句来源
     This paper focuses on the ecological problems of low soil fertility, strong soil acid and serious soil erosion in red soil region of southern China that occupy 22% of state land, as well as the lack of suitable forage in this area.
     针对占全国总面积22%的南方红壤区有机质含量低、酸性强、水土流失严重等生态问题,及福建省当家豆科草种少等问题。
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     soil acid in larch plantation has no influence on P efficiency
     同时,从速效磷的水平来看,落叶松人工林下土壤的酸度状况并不影响其效果。
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     It was suggested that an intense soil acid leaching was occurred in Mt.Jinyun. The contents of soil organic matter and total N in different layers showed a trend of A>B>C,e. g.
     在土壤剖面上,有机质、全N等指标表现出A>B>C层的趋势.
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     The cadmium content in the plants shows a positive correlation with that in soil solution but a negaive correlation with pH value in soil,and the soil acid alkalinity plays a controlling role for the plants in absorbing heavy metal elements.
     植物中的镉含量与土壤溶液中的镉含量成正相关关系,与土壤的pH值成负相关关系,土壤的酸碱度对植物吸收重金属元素具有显著的控制作用。
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  相似匹配句对
     ADSORPTION OF PHENYLFORMIC ACID ON SOIL
     苯甲酸在土壤中的吸附研究
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     Acid rain and soil ecosystem
     酸雨与土壤生态系统
短句来源
     Acid Deposition
     酸性降水
短句来源
     MANGROVE AND IT'S SOIL
     红树林及其土壤
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     Soil Age
     土壤的年龄
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  soil acid
Quantitative methods used in measurements of soil acid phosphomonoesterase (EC 3.1.3.2) activity which may find use in ecological monitoring are reviewed.
      
This study evaluated the effect of extreme HCl deposition on soil acid neutralization following simulated shuttle rocket launches.
      
The effect of extreme HCL deposition on soil acid neutralization following simulated shuttle rocket launches
      
Warming increased (68%) the activities of soil acid phosphatases in summer and alkaline phosphatase activity (22%) in spring 2004, and increased P concentrations in E.
      
An experimentally determined relation was used describing pH and phosphate concentration in the soil solution as a function of total soil acid concentration.
      
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This paper concludes the following aspects:The results of field inves-tigation on acid rain harmful to the soils and plants;The different res-ponses of soils and plants between the irrigated and spraied by the simul-tant acid rain;The changes of the constituents and properties of soiland percolate in the processes of leaching soil column with simultant acidrain;The vegetables response in yield and quality to the acidificationsoil after having been leached by acid rain in ten years'rainfall;The pHstability of...

This paper concludes the following aspects:The results of field inves-tigation on acid rain harmful to the soils and plants;The different res-ponses of soils and plants between the irrigated and spraied by the simul-tant acid rain;The changes of the constituents and properties of soiland percolate in the processes of leaching soil column with simultant acidrain;The vegetables response in yield and quality to the acidificationsoil after having been leached by acid rain in ten years'rainfall;The pHstability of soil and its acid capacity under the condition of being acidi-fied by the simultant acid rain or by various kinds of acid;The dynamicevidence of the mechanisum of soil acid buffer;The predict of soil aci-dification process and countermeasure studies.

本文总结了酸雨危害土壤与作物的现场调查研究结果;模拟酸雨灌溉和喷洒盆栽土壤与蔬菜作物的反应;模拟酸雨对土壤淋滤液成分性质的影响;10年雨量的模拟酸雨对盆栽蔬菜的生长效应;强酸致酸土壤的 pH 稳定性、酸容量、土壤酸化与缓冲作用机理的动力学研究和作物的临界 pH 值以及土壤酸化进程;防治酸雨导致土壤酸化的对策。

Simulated acid rain (pH 2, 3, 4, 5)and distilled water were used to irrigate or spray radishes cultured in three types of purple soil (acid, neutral, and calcareous purple soil).After being sprayed with acid rain at pH3.0 and 2.0. radishes exhibited not only foliar injury, but also significant decreasing of chlorophyll content, nitrate reductase activity, ascorbic acid content, soluble sugar and yield. But aftr being irrigated, only by acid rain pH2.0, the growth and...

Simulated acid rain (pH 2, 3, 4, 5)and distilled water were used to irrigate or spray radishes cultured in three types of purple soil (acid, neutral, and calcareous purple soil).After being sprayed with acid rain at pH3.0 and 2.0. radishes exhibited not only foliar injury, but also significant decreasing of chlorophyll content, nitrate reductase activity, ascorbic acid content, soluble sugar and yield. But aftr being irrigated, only by acid rain pH2.0, the growth and yield showed significant negative effects. In a short duration (one season), the negative effects of acid rain sprayed directly on radish are more serious than those of acid rain irrigated soil. But after exposing the acid purple soil to acid rain (pH2.0, 3.0) for a long time(5 seasons), the soils become very acid and radish growth and yield are seriously affected. Radish grown in calcareous purple soil is not sensitive to acid rain, in acid purple soil is sensitive, and in neutral purple soil is less sensitive.

模拟酸雨对三种不同性质紫色土盆栽萝卜的喷洒或根灌试验结果表明:喷洒酸雨pH为3时,萝卜叶片便出现可见性伤害,生化指标、产量、品质明显下降,根灌酸雨pH2时萝卜生长才明显受害。短期试验中,直接危害较间接危害严重,但酸雨长期作用于土壤引起的间接危害将更严重、更深远。萝卜生长在酸性紫色土上对酸雨最敏感,在中性紫色土上次之,在石灰性紫色土上不敏感。

The enrichment capability of native zinc by iron oxide, manganese oxide and organie matter in 18 soils of the eastern China were studied with the sequential extraction fractionation procedure. Soils used include 5 acid soils, 5 neutral soils and 8 calcareous soils which are derived from 11 kinds of parent materials from south to north in China.The enrichment capability of native zinc by per unit soil components is different from enrichment capacity of soil components,...

The enrichment capability of native zinc by iron oxide, manganese oxide and organie matter in 18 soils of the eastern China were studied with the sequential extraction fractionation procedure. Soils used include 5 acid soils, 5 neutral soils and 8 calcareous soils which are derived from 11 kinds of parent materials from south to north in China.The enrichment capability of native zinc by per unit soil components is different from enrichment capacity of soil components, and a comparative study of them were conducted.The enrichment capability of native zinc by per unit components may be expressed as enrichment distribution ratio (EDR) and enrichment capacity as distribution coefficient (DC):EDR=(enrichment capacity/total zinc/amonnt of component) × 100,DC=(enrichment capaeity/total zinc) × 100,EDR of various components in soils of the eastern China is, in general, as follows: manganese oxide>iron oxide>organic matter and amorphorous iron oxide>crystalline iron oxide, being in the same order as the enrichment capability of per unit of these components. In addition, there is the same tendency for enrichment capability of per unit of these components from acid soils to calcareous soils, i.e., calcareous soils>neutral soils> acid soils. This shows that enrichment capability of per unit of components is related with their properties and increases with soil pH.The distribution of EDR. of soil components is characterized by somewhat geography distribution especially for iron ,oxide. From south to north in the eastern China, the EDR of iron oxide increases. It is≤5 in acid Soils, 5—15 in neutral soils and ≥15 in calcareous soils. Geography distribution is related with the effect of soil pH on the enrichment capability of zmc in soil. The optimium regression equation ,of EDR of iron oxide (y) with.8 soil properties (x) is that: y =-20.80+6.26pH (r=0.64~(**), n=18). Soil pH is one of the most irnportant factors controlling the enrichment capability especialIy for iron oxide.But the enrichement capacity of native zinc by various soil components as DC is in the following order: iron oxide>organic matter>manganese oxide and Cox. iron oxide>Amor. iron oxide. This shows that although the enrichment capability of per unit of manganese oxide is more than.that of iron oxide, the enrichment capacity of iron oxide is more than that of manganese oxide becouse of more iron ,oxide in soil. The same as Amor. iron oxide and Cox. iron oxide. On the other hand, this relates with the transformationof amorphorous iron oxide Zn into crystalline iron oxide Zn with the elapsing of time.The enrichment capacity of iron oxide in different soils is as follows: calcareous soils>neutral soils>acid soils.And it is obvious that the enrichment capacity of soil components depends not only on the enrichment capability of per unit of soil components, but also on the components amount in soil.

本文研究了我国部分自然土壤中氧化铁、氧化锰及有机质三种组分对原有土壤中锌的富集能力。并比较了不同土壤类型中各组分对锌的富集能力,探讨了土壤环境条件主要为pH对组分富集能力的影响。结果表明,土壤中这三种组分其单位含量对锌的富集能力为:氧化锰>氧化铁>有机质;三:种组分对锌的富集能力在土壤间的变化以氧化铁最为明显,其顺序为石灰性土壤>中性土壤>酸性土壤;土壤pH对土壤氧化铁富集锌能力的影响也很明显。氧化铁对锌的富集分配比例为:酸性土壤<5,中性土壤5—15,石灰性土壤≥15,各土壤组分对锌的富集容量次序为:氧化铁>有机质>氧化锰,氧化铁中,晶形铁>无定形铁。

 
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