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盐碱地     
相关语句
  saline land
    Saline land area has reached 950 million hm~2 on the earth.
    目前,全球盐碱地面积已达9.5亿hm2。
短句来源
    The Way on Sult-Control and Exploitation Alkaline and Saline Land in the Hetao Ir- rigation Area of Inner Mongolia,
    内蒙古河套灌区盐碱地生物开发与治理之途径
短句来源
    A Demonstration Project of Saline Land Improvement by Artificial Forage Grass Planting in Wudi County
    无棣县人工牧草盐碱地改良示范工程
短句来源
    A Research on Characteristics and Rational Exploitation of Soda Saline Land in the Western Songnen Plain
    松嫩平原西部盐碱地特点及合理利用研究
短句来源
    Improvement Model of Saline Land in the Hexi Corridor
    河西走廊盐碱地治理模式研究
短句来源
更多       
  alkaline land
    Necessity and Feasibility of Biotic Improving the Saline and Alkaline Land in Xinjiang
    新疆盐碱地生物改良的必要性与可行性
短句来源
    Biological improvement of saline and alkaline land in Xinjiang
    新疆生物改良盐碱地效益研究
短句来源
    Investigation and Research for Variation of Soil Nutrition of the Saline or Alkaline Land in Panjin
    盘锦盐碱地土壤养分状况的调查研究
短句来源
    Research on the Integrate Control to Saline and Alkaline Land of Xinjiang
    新疆盐碱地的综合治理研究
短句来源
    Chapter 2 introduces the basic situation of the Shulehe region, and analyses the reason why the salt and alkaline land forms.
    第二章介绍了疏勒河项目区的基本情况,并分析了盐碱地形成的原因;
短句来源
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  saline ground
    Studies on Soil Salinity Change by Planting Salt-tolerant Wheat in Saline Ground in Xinjiang
    新疆盐碱地种植耐盐小麦土壤盐分的变化
短句来源
  alkali saline
    The characteristics of the infiltration, the salt content, salt concentration distribution, are studied through a series of experiments of the soil water movement and salt transport at laboratory in accordance with the characteristics of alkali saline soils and the concerning research results under one dimension water ponding infiltration at home and abroad. The results will provide some guidance for the utilization of the salt effected soil.
    在分析和总结国内外有关一维积水入渗条件下土壤水盐运移规律研究成果的基础上 ,针对盐碱土水盐运动的基本特征 ,通过室内一维土壤水盐运移过程的试验研究 ,分析了土壤盐分浓度分布规律 ,为盐碱地的开发利用提供了科学依据
短句来源

 

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  saline land
Detection of Coastal Saline Land Uses with Multi-Temporal Landsat Images in Shangyu City, China
      
rostrata is moderately salt tolerant and may be utilized as forage crop and green manure on saline land.
      
The frequent temporal and spatial transition in source class, grassland, alkali-saline land and irrigated cultivated land caused negative effects on the oasis environment.
      
To the extent new cropland can be developed from unused saline land, further land clearing and loss of C storage in forest fallow and old growth forests can be spared, thereby adding to the carbon sequestering potential of all usable ecosystems.
      
Feasibility Study of Salicornieae as Oil-seed Halophytes for Saline Land and Water.
      
更多          
  alkaline land
The result shows that there were rapid increases in the area of cropland, saline-alkaline land, and dramatic decreases in grassland, water area and wetland between 1986 and 2002.
      
frigida steppe and eight non-grassland types: active cropland, harvested cropland, urban area, wetland, desertified land, saline and alkaline land, cloud, water body + cloud shadow.
      
The area of soil salt accumulation was greater in irrigated than in non-irrigated landscape types with an increasing of 40.04% from 1983 to 2005 in cropland at ~0.43?t ha-1 year-1, and an increase at ~0.68?t ha-1 year-1 in saline alkaline land.
      
  saline ground
Appropriate tree species and planting methods can help rehabilitation of arid areas - that are characterized by low rainfall, high evapotranspiration demands, highly saline ground waters and calcareous subsoils.
      
The flux of DOC associated with the discharge of these saline ground waters is 600 mg carbon m-2 d-1, which represents a significant fraction of the annual DOC budget for North Inlet.
      
Nearly 60 per cent of the geographical area of Haryana state in Indian Union is underlain by saline ground water.
      
The field studies demonstrated that approximately 40to 45% of the water requirement for cotton can bederived from shallow saline ground water.
      
Drip Irrigation of Tomato and Cotton Under Shallow Saline Ground Water Conditions
      
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  其他


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本文簡要的闡述了种稻改良盐碱地在我国盐碱地改良工作以及国民經济上的重要意义。种稻是利用盐碱地,特别是低洼盐碱地的最好方法。水稻的生理特性,正可以把低洼地区容易积水、两季易涝、盐分脫除困难等不利因素变成有利条件,不需要庞大的投資,当年就可获得300~400斤以上的亩产量。种稻由于用水期长、用水量大的特点,对于改良任何一种盐碱土,它起到的脱盐作用均較其他措施为大。并且还可通过灌溉水中大量的泥沙改善土壤理化性質。在改善水文地質条件方面也有明显的作用。本文着重指出了种稻改良盐碱地的关鍵措施——水利土壤改良技术的作用,特别对排水在改良盐碱地中的作用,作了比較詳尽的分析。对于种稻与碱土改良及种稻对周圍旱作地区的影响两个問題,也作了初步的探討。

After Visiting Australia,the Delegation for Investigating Sprinkling and Dripping Irrigation systems,Which was sent by the Ministry of Machine Brulding Industry,considers that microsprinkler and dripirrigation systems are more suitable irrigation devices for droughty,salty,alkali and desert regions with serious shortage of water in China;and propssese some suggestions for developing microsprinkler and drip irrigation systems in China,such as;to interoduce few equipments from Australia for propagation after testing,to...

After Visiting Australia,the Delegation for Investigating Sprinkling and Dripping Irrigation systems,Which was sent by the Ministry of Machine Brulding Industry,considers that microsprinkler and dripirrigation systems are more suitable irrigation devices for droughty,salty,alkali and desert regions with serious shortage of water in China;and propssese some suggestions for developing microsprinkler and drip irrigation systems in China,such as;to interoduce few equipments from Australia for propagation after testing,to do seientific researcc h work,to utilize efluent for irrigation ,to establish two manufactories,to improve industrial managment ,to devote much attention to quality of products,etc.

本文是机械工业部所组织的喷滴灌设备考察组在澳大利亚考察后,认为微型喷灌和滴灌设备是我国干旱、盐碱、沙漠等严重缺水地区较合适的灌溉工具,提出发展我国微型喷灌和滴灌设备的几点意见如:在黄淮海盐碱地改造工程中引进少量设备,通过试验,再行推广;开展科研工作;利用净化污水进行灌溉;建立两个制造工厂;改进企业管理;重视产品质量等。

Plants make use of mass and energy which are transported in the Soil-Plant-Atmosphere continuum, known as SPAC system. Previous quantitative investigations on the mass/energy transports in the SPAC system and their gover-ing equations are dealt with in this paper as: water, solutes and heat (or temperature) transports. Some new concerns, such as heat-water coupled transport, simultaneous water-solute transport and coupled water-heat-solute transport, of research in China are given. The advances in experimental...

Plants make use of mass and energy which are transported in the Soil-Plant-Atmosphere continuum, known as SPAC system. Previous quantitative investigations on the mass/energy transports in the SPAC system and their gover-ing equations are dealt with in this paper as: water, solutes and heat (or temperature) transports. Some new concerns, such as heat-water coupled transport, simultaneous water-solute transport and coupled water-heat-solute transport, of research in China are given. The advances in experimental and theoretical studies of SPAC system in China are as:successful application of Regulated Deficit Irrigation; solving salinity problem with better, quantitative soil water management; dynamical estimate of water extraction by plants; application of SPAC system simulation to irrigation timing. Several difficult aspects concerning SPAC system research are listed as: appropriate models for the descriptions of transport processes; determination of reasonable boundary conditions; measurement techniques for physical parameters of soils; treatments of soil variations; effective methods for the solution of different processes; combination of computational and experimental, both indoor and in the field, methods.

综述了国内外对SPAC(土壤—植物—大气统一体)系统质能传输过程从事的理论研究进展;介绍了一些新的研究课题,以及国内近年来在SPAC系统研究中理论和实验研究方面所取得的一些重要成果,即调控亏水度灌溉技术,“脉冲”灌溉技术的研究及应用、用土壤水的定量管理改良盐碱地的措施等;提出了一些在SPAC系统研究中需要解决的研究难题,包括建立适当的模型、确定合理的边界条件、参数等问题。

 
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