鹽化土壤 的英文怎麼說

中文拼音 [yánhuàtǔrǎng]
鹽化土壤 英文
salty soils
  • 鹽 : 名詞1. （食鹽; 鹽類） salt 2. （姓氏） a surname
  • 壤 : 名詞1. （土壤） soil 2. （地） earth 3. （地區） area 4. （姓氏） a surname
  1. The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno

    研究結果表明： 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化：隨海拔高度上升，機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒，海拔1600m以下出現粘化層；土壤有機質豐富，表層有機碳含量一般在20g kg以上，有機碳含量隨海拔高度升高而相應增加，海拔3500 3700m的灌叢草甸植被下有機碳含量最高；土壤呈酸性或微酸性，並隨海拔上升， ph值略微降低，酸性增強，海拔2700m以上的土壤多呈鹽基不飽和狀態，表明土壤淋溶作用較強， ph值和鹽基飽和度呈極顯著正相關；土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定，土體中sio _ 2含量較高， cao含量較少， sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ，礦質元素含量的順序依次為： sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。
  2. The soil salification is a serious problem for agriculture and environment. especially now with the development of industry, the situation of soil salification becomes more and more serious, and the quality of water is continuous worsened. research on the mechanism of salt tolerance especially in the important crops, such as wheat, is becoming more urgent than ever before

    土壤鹽漬化是影響農業生產和生態環境的嚴重問題，隨著工業污染加劇，灌溉用水的質量不斷下降和化肥使用不當等原因，次生鹽堿化土壤面積有不斷加劇的趨勢，給農業生產造成重大損失；黃矮病毒病是小麥等禾本科植物的重要病害之一，其傳毒介體蚜蟲更使植物產量損失巨大。
  3. Because of the evaporation, dissolved salt is brought to cumulate at the ground surface and the root zone when the ground water is above the critical level. then the saline soil is formed

    超過臨界深度的地下水，在蒸發作用下，將鹽分帶至地表或根系分佈層累積下來，形成鹽漬化土壤或鹽土、堿土。
  4. The environmental geological problems existing in the west liaohe plain involve desertification of land, salinization of soil, declining of groundwater level and pollution of groundwater

    摘要西遼河平原的環境地質問題主要表現為土地沙漠化、土壤鹽漬化、區域地下水位元下降及地下水污染等。
  5. ( 2 ) aiming at the bigger irrigation quota of fall irrigation system and the complicacy of the salt movement in soil, the paper applies reservoir leaching model bring forwarded by w. h. van der molen to hetao irrigation district located in aridity area, and establishes salt leaching simulational model under the fall irrigation system. through calculating, the feasible fall irrigation quota is 100 - 120m2 / 667m2 in light salinization soil, and the feasible fall irrigation quota is 120 - 150 m2 / 667m2 in mild salinization soil. the model is reasonable and exact, and it can be researched deep

    （ 2 ）針對在秋澆灌溉制度中秋澆定額較大，土壤中鹽分運移規律復雜的特點，利用w ? h ? vandermolen提出的水庫沖洗模型，建立了地處乾旱地區的河套灌區區域內的秋澆制度鹽分淋洗模擬模型。經計算在輕度鹽漬化土壤中秋澆的灌溉定額以100 120m ~ 3 667m ~ 2為宜；中度鹽漬化土壤秋澆的灌溉定額以120 150m ~ 3 667m ~ 2為宜，模型合理可靠，準確可行，可進一步向縱深方向進行研究。
  6. Hygroscopic coefficient and wilting point of salt - affected soils in jingdian irrigation zone, gansu

    甘肅景電灌區鹽化土壤的吸濕系數與凋萎濕度及其預報模型
  7. The factors causing soil salinization include natural factors such as climate, hydrological and geological conditions, and human - made factors, such as irrigation patterns and cultivating system

    鹽漬化土壤類型主要為典型鹽土、沼澤鹽土、堿化鹽土和乾旱鹽土。
  8. Effect of different measurements on crop growth

    不同管理調控措施對鹽漬化土壤上大麥生長的影響
  9. There is three hundred million unit of area in our china

    僅在我國就有3億多畝鹽荒地和1億多畝鹽漬化土壤。
  10. Biological measures for utilization and development of salinized soil

    改良和開發利用鹽漬化土壤的生物學措施
  11. Characteristics and current situation of salinized soil in da ' an city, jilin province

    吉林省大安市鹽漬化土壤特徵及現狀研究
  12. Salinity effect on sunflower at seedling stage during improving sodic soils reclaimed with by - product from flue gas desulphurization

    脫硫石膏改良堿化土壤過程中的向日葵苗期鹽響應研究
  13. This paper discusses how the silicate bacteria affect potassium releasing from minerals, especially the function mechanism during the interaction between bacterial and minerals ; the paper emphasize the problem such as the utilization of silicate bacteria to release significant amounts of potassium from soil minerals in the karst area, and at the same time the utilization of the silicate bacteria in the agriculture of karst area is discussed

    主要探討矽酸鹽細菌的解鉀作用，以及使難溶性礦物態鉀轉化為速效性鉀的作用機理；同時在研究矽酸鹽細菌解鉀作用機理問題的基礎上，重點探討了喀斯特環境中利用矽酸鹽細菌活化土壤中的礦物鉀元素的問題，特別是矽酸鹽細菌在喀斯特環境中農業上的利用。
  14. The damage of soil salinization to service function of soil eco - environment is severe but its economic loss is not assessed yet

    全省重度鹽漬化土壤對生態環境損害造成的經濟損失至少達140億元（ 1996年幣值） 。
  15. So far, most related researches and achievements have showed that acid rain has certain impact on functions of a soil ecosystem. such as leaching of soil base - exchangeable ions, heavy metals and microelements, nitrogen, contents of sulfur and phosphorus nutrients, soil acidification, population and activities of soil microbes, soil buffer capacity, soil sensitivity to acid rain, soil structure and weathering status of soil minerals, and so on

    現有的大量研究表明，酸雨對土壤生態系統的功能特性，包括土壤的鹽基離子以及重金屬與微量元素的淋溶、土壤營養、土壤酸化、土壤微生物數量及其活性、土壤緩沖性能、土壤對酸雨的敏感性、土壤結構、土壤礦物風化等方面均會產生一定的影響。
  16. There are four soil types in the area : typical saline soil, swamp saline soil, alkaline saline soil and arid saline soil

    甘肅省的鹽漬化土壤主要分佈在河西走廊，其中以酒泉地區、張掖地區和武威地區最為嚴重。
  17. The largest and perhaps only real threat to sustainable agriculture comes from unchecked population growth and the resulting downstream effects such as changes in the climate, soil erosion, soil salinization, and soil nutrient depletion

    持續農業所面臨的最嚴重的威脅是無限制的人口增長以及隨之帶來的氣候變化、土壤侵蝕、土壤鹽漬化以及養分耗竭。
  18. With the development of agriculture and industry and the enlargement of man ' s activity, the demand of water supply has increased in the region over the past decades. in the backward areas along the heihe river, there are a lot of ecological environmental problems such as lake dried up, sustainable, lowering of ground water level, water pollution, soil salinization and desertification, degradation of natural oasis and grassland, as well as sand storm

    近幾十年來，由於工農業的發展和人類活動的擴大，黑河流域中下游用水量的增加，黑河下游出現了嚴重的缺水現象，由此導致了一系列諸如河流湖泊乾枯、地下水水位持續下降、水質惡化、植被退化、土壤鹽堿化、土地風蝕化等環境問題。包氣帶水分、鹽份的分佈和運移對地表植被生長有著重要的影響。
  19. Eng. ) we teach soil definition, soil classification, soil architecture and physical properties, soil aeration and temperature, soil colloids, soil acid, alkalinity and salinity, soil organisms, soil organic matter, nitrogen and sulfur economy of soils, soil phosphorus, potassium and micronutrients, practical nutrient management

    中）主要講述土壤的基本定義，土壤的化育、生成與分類，土壤的物理、化學與生物特性，土壤的通氣與溫度，土壤膠體特性，土壤的酸性、堿性和鹽性，土壤中的元素，土壤管理等。
  20. Situated in northwest china, ningxia has the typical eco - environmental problems of west china such as water and soil erosion, soil salinization, land desertification, and so on, so that there is a sharp contradiction between the spatial development of urban system and the eco - environmental conservancy

    寧夏地處我國西北部，具有西部非常突出的生態環境問題：水土流失、土地沙化、土壤鹽漬化，因此城鎮體系的空間發展與生態環境保護的矛盾極為突出。
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