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   soil reduction 的翻译结果: 查询用时:0.171秒
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soil reduction
相关语句
  土壤还原作用
     The obtained data were treated with the method of multiple comparison. The results showed that soil reduction was promoted in the treatments with receiving corn straw or/and glucose/peptone, the Eh value became very low, the pH value moved to 7.0, the contents of available copper decreased obviously, in comparison with the treatments receiving weathering coal or/and peat. The causes of the changes were also discussed.
     结果表明,玉米秸秆、葡萄糖/蛋白胨能够明显促进土壤还原作用,使土壤处于氧化还原平衡状态,使黄壤和石灰土的Eh值下降至数十毫伏、甚至负值,使其pH值接近7,并使有效铜含量明显降低; 风化煤、泥炭则不能促进该两种土壤的还原作用,其Eh值仍在数百毫伏左右,pH值和有效铜含量的变化都不明显。
短句来源
  土壤的还原
     Results indicated that under continuous flooding(CLW),organic manure,especially barnyard manure,decreased soil Eh and aggravated soil reduction process,which resulted in increase in amorphous Fe 2O 3.In addition,its effect on improving soil physical environment was also weakened significantly.
     结果表明 ,在连续淹水下 ,施用有机肥料 ,特别是厩肥 ,降低了土壤Eh ,加剧了土壤的还原状态 ,同时也使土壤无定型态铁氧化物含量上升 ,对改善土壤物理环境效果也明显削弱 ;
短句来源
  “soil reduction”译为未确定词的双语例句
     2.By detection and analysis on litter accumulation, water梙olding capacity of the litter and interception of main types of forests, its waterolding capacity, intercepting role, water storage and soil reduction of litter were studied. It was considered that the hydro?
     2 通过对祁连山水源涵养林凋落物累计量、枯枝落叶持水能力以及截留作用测定分析,研究了枯落物叶层的持水、截留作用和蓄水保土效益。
短句来源
     Crop rotation with rice and upland crops could lower the groundwater level, improve soil aeration condition, increase soil available nutrients content, and decrease soil reduction matter content during rice planting season.
     水旱轮作能有效地降低地下水位、改善土壤通气条件、增强土壤养分的有效性,有效降低水稻栽培期土壤还原性物质的含量;
短句来源
     Study on soil properties in Chinese- fir Repeated plantation and in the first cultivation standshowed that cultivation without rotation could cause change of soil Physical properties,decrease of organicmatter N. P. K content in soil, reduction of microbe, decrease of enzyme activity and breathing intensity.
     杉木连栽与头裁土壤的研究表明,连栽引起土壤物理性状变差,土壤有机质、N、P、K养分含量下降,土壤微生物数量减少,酶活性和呼吸强度下降。
短句来源
     During the last 20 years,the increasing population and livestock ,over reclamation,over pasturing,over deforesting,and other intensified negative human activities in the zone resulted in coarsening of surface soil,decrease of organic matter content in soil,reduction of vegetation coverage,variation and degradation of flora structure,and hence in desertization of the land.
     虽然近 2 0年大风与沙尘暴平均次数有所减少 ,主要气候要素趋向良性 ,但因人畜增长 ,人为过度垦、牧、樵等负面活动强化 ,导致该区表层土壤颗粒粗化 ,有机质含量降低 ,植被覆盖度下降 ,植物群落结构变异、退化 ,土地荒漠化加重。
短句来源
     The wilting litter accumulation and the decomposing process varying with time under Picea crassifolia forests and other types of forest in Qilian Mountains were analyzed. Also, its waterholding capacity, intercepting role, water storage and soil reduction of litter were studied. The annual litter of Picea crassifolia forests accounted to 2.689 t穐m-2穉-1. The maximum water holding capacity of the litter was equal to 12.5 mm of rainfall.
     通过对祁连山青海云杉林及其它林型凋落物累积量、分解过程随时间变化的分析,研究了枯枝落叶层的持水能力、截留作用和蓄水保土效益,青海云杉林年凋落物量为2.689 t/hm2a,它的枯落物层最大持水量相当于12.5 mm的降雨量。
短句来源
  相似匹配句对
     REDUCTION CAPACITIES OF SOIL FOR Cr(VI)
     土壤对六价铬的还原容量初步研究
短句来源
     The Generalized Oxidation and Reduction Reactions in Soil Chemistry
     土壤化学中的广义氧化还原反应
短句来源
     ON THE REDUCTION OF THE MULTIVARIABLE
     关于多变量开关函数化简的问题
短句来源
     soil productivity;
     土壤生产力;
短句来源
     ⑥soil.
     ⑥土壤因素。
短句来源
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  soil reduction
Management plans concerned with regeneration of bottomland forested ecosystems should consider the species flood response capabilities at seedling stages as well as the timing, durations, and intensities of soil reduction at the specific site.
      
Low soil pH limited soil reduction and subsequently CH4 production.
      
Soil reduction also caused an increase in P-sorption.
      
The decrease in P-sorption due to soil reduction was greatest in a crystalline soil with vermiculite and halloysite as the dominant clay minerals and least in a soil with dominant X-ray amorphous silicates in the clay fraction.
      
Soil reduction by flooding decreased P-sorption by 28-70 percent at 0.2 ppm P in solution.
      
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Greenhouse experiments were conducted to determine the effects of straw, CaCO3, and MnO2 on the electrochemical and chemical kinetics and rice growth and yield in a flooded acid sulfate soil.Straw (0. 25% by weigh of the dry soil) application had a pronounced effect on soil reduction. High concentration of watersoluble Fe2+ stunted plants at early growth (but the Fe2+ concentration gradually decreased and plants had vig-orus growth at maturity. Grain and straw yields at harvest were higher. Potassium in...

Greenhouse experiments were conducted to determine the effects of straw, CaCO3, and MnO2 on the electrochemical and chemical kinetics and rice growth and yield in a flooded acid sulfate soil.Straw (0. 25% by weigh of the dry soil) application had a pronounced effect on soil reduction. High concentration of watersoluble Fe2+ stunted plants at early growth (but the Fe2+ concentration gradually decreased and plants had vig-orus growth at maturity. Grain and straw yields at harvest were higher. Potassium in the plant tissue was hight where straw was added.Adding CaCO2(0. 25% by weight of the dry soil) markedly increased soil soltuation pH,decreased Eh and EC,and significantly depressd concentrations of water-soluble Fe2+ ,Mn2+ and Al3+.Calcium carbonate,alone or in combination with MnO2,depressed Fe concentration in the soil solution and signficantly increased straw and grain yields. Calcium and MnOj applications also enhanced N and P content in the straw but decreased Zn content.Adding 0. 005% MnO2(by weight of the dry soil) increased the Mn in the soil solution,depressd the Fe:Mn ratio in the plant tissue,and increased grain yield significantly over the control. Results show that straw as an inexpensive amendment for acid sulfate soils merits further study.

研究了稻秆、碳酸钙和二氧化锰改良剂对淹水的酸性硫酸盐土的电化学、化学动力学、水稻生长及产量的影响. 施用稻秆(干土重的0.25%)显著影响土壤的还原作用.高浓度的亚铁使水稻前期生长受阻;但亚铁的浓度随后逐渐降低,水稻生长繁茂,谷粒和茎秆产量反较高,植株的含钾量也增高. 加入酸酸钙(相当于干土重的0.25%)明显提高了土壤的pH值,降低土壤的Eh和EC值,并显著降低了水溶性亚铁、亚锰和铝的浓度.碳酸钙或碳酸钙加二氧化锰的处理,都能降低土壤溶液中亚铁的浓度,显著增加稻谷和稻杆的产量,此外,这两种处理都会降低生长前期植株中锌的含量. 加入二氧化锰(干土重的0.005%),使土壤溶液中的亚锰量增多,植株的铁锰比率降低,水稻产量比对照显著增加. 研究结果表明,稻杆是一种改良酸性硫酸盐土较经济的改良剂,其价值值得进一步研究.

It is reported that waterflood, cool,mashed structure, poor air-permeability, accumulated poison, nutrient deficiency etc.,are among the obstructive factors of gleyed paddy soil, and rice-xerophyte rotation is one of the efficient measures for its improvement. In this study, by introducing rice-xerophyte rotation to amelioate gleyed paddy soil, it was showed that the rotation could improve soil permeability, raise soil Eh, reduce soil reduction matter, increase microbiomass and microbial activity, and...

It is reported that waterflood, cool,mashed structure, poor air-permeability, accumulated poison, nutrient deficiency etc.,are among the obstructive factors of gleyed paddy soil, and rice-xerophyte rotation is one of the efficient measures for its improvement. In this study, by introducing rice-xerophyte rotation to amelioate gleyed paddy soil, it was showed that the rotation could improve soil permeability, raise soil Eh, reduce soil reduction matter, increase microbiomass and microbial activity, and enrich available nutrients. Therefore, crops produced higher yields due to growing in a favorable soil condition and farmer's annual benefit got raised because of more intensive land use.

潜育化水稻土存在渍、冷、烂、闭(气)、毒及缺素等障碍因素,采取水旱轮作是改良利用潜育化水稻土极其重要的措施.研究表明,水旱轮作可以改善土壤通气透水性能,提高氧化还原电位,减少还原物质,增加土壤微生物数量及提高其活性,增加土壤速效养分,促进作物生长发育,提高作物产量,并能提高土地利用率,获得全年农业增产增收增值.

The concept of soil reduction capacity and its potential application to remediating of Cr contaminated soil and groundwater were discussed.Three types of reduction capacity of soil,i.e.,the potential reduction capacity,available reduction capacity,and conditional reduction capacity were suggested.Three soil samples were collected from a groundwater pumping area and a Cr contaminated groundwater area in Tangshan City in north China.Soil column leaching experiments...

The concept of soil reduction capacity and its potential application to remediating of Cr contaminated soil and groundwater were discussed.Three types of reduction capacity of soil,i.e.,the potential reduction capacity,available reduction capacity,and conditional reduction capacity were suggested.Three soil samples were collected from a groundwater pumping area and a Cr contaminated groundwater area in Tangshan City in north China.Soil column leaching experiments were conducted to evaluate the relations between the carious reduction capacity for Cr(Ⅵ) of soils.Approaches to increase the available reduction capacity of the soil by adding selected reductive materials,such as cattle manure,FeS and weathered coal were investigated.Results showed that the available reduction capacity of soil was about three orders of magnitude lower than the corresponding potential reduction capacity.Adding of selected reductive materials to soil could increase the available reduction capacity of soil. Compared with FeS and weathered coal, the cattle manure proved to be a better reductive material apparently with a prolonged reduction potential.

提出并讨论了土壤的潜在还原容量、有效还原容量和条件还原容量等概念;通过对采自北京和唐山地下水饮用水源区3个包气带土壤样品的土柱淋滤实验,研究了土壤对水溶液中六价铬(Cr(VI))的还原作用,研究了上述土壤各种还原容量之间的关系及影响因素;探讨了向土壤中投加适量常见、无毒、价廉的还原性物质(如厩肥、FeS和风化煤等)以提高土壤还原能力的方法和将其应用于去除灌溉用污染地下水中六价铬(Cr(VI))的可能性.实验结果表明,在正常环境条件下,土壤的有效还原容量比土壤的潜在还原容量低3个数量级左右.向土壤中投加适量还原性物质可以大大提高土壤的有效还原容量.与FeS和风化煤相比,厩肥还原效果最好,具有更持续的还原能力.

 
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