land productivity 中文意思是什麼

land productivity 解釋
土地生產力
  • land : n 1 陸地，地面。2 土地，田地；農田；〈pl 〉所有地，地產。3 國土，國，國家；領土；地方；（…的）世...
  • productivity : n. 1. 多產，豐饒。2. 生產率；生產能力。
  1. In acidic soils, its toxicity is considered to be the most limiting factor for plant productivity. based on an estimate of the world ' s potentially arable land resources, it has been estimated that most of the cultivable area ( 78. 4 % ) is composed of acid soils

    全世界有39 . 5億hm ~ 2酸性土壤，其中可耕土壤面積為1 . 79億hm ~ 2 ，如何解決酸性土壤的鋁害問題已經是不容忽視的一項重要課題。
  2. The research of soil degradation in pur country is mainly concentrated on the red earth hilly area in the south in the past, and is less on the loess plateau that is one of the most fragile areas. based on field experiment and laboratory analysis, discuses the degradation mechanism, and raises the methods of refreshing and reestablishing land productivity of huangshan soil in chunhua county of shaanxi. in the hope of serving development of western regions and ecological environment construction that concede the land to forestry ( the grass )

    我國以前對土壤退化問題的研究主要集中於南方紅壤丘陵區，對生態環境最脆弱的黃土高原地區的土壤退化研究相對較少，故本文以黃土高原地區陜西淳化縣的侵蝕性黃?土為對象，通過野外人工模擬降雨試驗和室內分析相結合的方法，探討了侵蝕性黃?土的退化機理，提出了恢復和重建黃?土土地生產力的途徑和方法，以期服務于西部大開發和退耕還林（草）的生態環境建設。
  3. A gis based study on the potential land productivity of china

    的中國土地生產潛力研究
  4. On the other hand, it may improve the land productivity

    通過土地整理，一方面可以增加有效耕地面積，另一方面可以提高土地持續生產能力。
  5. The product has various functions, such as : degradation pesticide residue, solid n, solve p, solve k, promote root growth, advance prematurity, economize manure and increase the effect, promote fertilizer land productivity, improve tiny ecosystem circulation and boost production ( 15 - 30 % ) etc

    該產品具有降解農藥殘留、固n 、解p 、解k 、促根生長、促早熟、節肥增效、培肥地力、改善微生態循環、增產顯著（ 15 ? 30 % ）等多種功能。
  6. On the basis of investigated data of wangmaogou watershed check dams system, the benefits of flood trapping and sediment blocking, increasing land productivity, eco - environment, society are analyzed

    根據王茂溝流域淤地壩壩系的調查資料，分析了王茂溝流域壩系的蓄洪攔泥、增產、生態、社會效益。
  7. Peasants ' income state depends on agricultural labor productivity and land productivity to a great extent

    農民的收入狀況在很大程度上取決于農業勞動生產率和土地生產率。
  8. The time problem of fisheries land productivity

    漁業土地生產率的時間問題
  9. As a species of mixed forests, nitrogen fixation trees play an important role in improving forest land nutrient and moisture status, maintaining soil productivity, enhancing forest land productivity, and accelerating main species growth

    作為混交樹種，在混交林中發揮著改善林地養分及水分狀況，維持地力，提高林地生產力，很好地促進主要樹種生長的重要作用。
  10. Part four, single evaluation of cultivated land arrange potentiality, cultivated land arrange potentiality can be appraised from the following four parts, potentiality improvement of land utility efficiency, increasing potentiality of land productivity, potentiality of ecological environment enhanced and potentiality of product and investment saved

    第四部分，耕地整理潛力單項評價。從耕地利用率提高潛力、耕地生產力提高潛力、生態環境改善潛力和生產成本節約潛力四個方面對耕地整理潛力進行單項評價。第五部分，耕地整理潛力綜合評價。
  11. The excess utilization for human on land result in a series of evil consequence, for example, the increase of soil and water loss, the degradation of eco - environment, the decrease of bio - diversity severely and the decline of land productivity

    目前，人類對自然的過度利用導致水土流失加劇、生態環境退化、生物多樣性劇減、土地生產力下降等一系列惡果；同時，環境退化已成為經濟發展的制約因素。
  12. ( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely, and the mean rate of enhancing yield is 23. 53 percent in this region with annual enhancing - rate of 0. 64 percent in last 15 years. ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter, total nitrogen, effective phosphine and soil texture in turn. in a word, attenuation cause of land productivity is the result of water and soil. ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2, but it has a high distinction between southern aera and north area in yaan city. ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ), but it has a high classification of potential productivity, ( g ) ditribution map was formed of potential land productivity. ( h ) it could be act as decision support for agriculture development, national land planning and ecotop constructive, etc

    5 、土地自然生產潛力水平的主要土壤限制因素為有機質、全氮，其次為速效磷和土壤質地；區域潛在生產力差異的制約因素，主要為土壤，次為水分，水、土兩項衰減合計為45 . 99 ，石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間，高等級林地比重小，以大相嶺為界，北部的各縣林地生產力水平高，南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高，潛力在16973 4085kg / （ hm ~ 2 ? a ）之間，以高產的一、二、三級草地為主，且近10年來該比例變化不大。
  13. Situation and prospects of researches on land quality, land productivity and food security

    生產能力與糧食安全相關研究的現狀及展望
  14. The cropping pattern should be adjusted, so as to give a higher yield and maintain land productivity

    進行合理輪作，不但能獲得高產，而且可保持土壤生產力。
  15. But factors such as low population intensity and low land productivity restrict the efficient demand for road transport

    但樣本縣因人口密度過小、耕地生產率低下等因素限制了對公路運輸的有效需求。
  16. The results prove land degradation through influence land productivity and per capita agriculture total value to influence peasants per capita income

    發現土地退化是通過影響土地生產力進而影響人均第一產業總值來影響農民人均收入。
  17. The question that soil erosion causes loss of soil nutrient and leads to degradation of land productivity has received many attentions. but the research on soil potassium loss by erosion is under study

    土壤侵蝕引起土壤養分徑流流失，導致土壤生產力降低這一問題已引起人們普遍關注，但有關土壤鉀素徑流流失研究方面的報道不多。
  18. 16032 evaluation units of the potential land productivity were overlaid out. by using the mechamism methodology and relative computing models, yaan city ' s land productive potentiality was computed according to synthetic index of land productivity evaluation that was taken as soil effective coefficient. result of research indicated that : ( a ) siol effective coefficient changed from 0. 3047 to 0. 8550, respectively with medium - low yield farmland of 71. 28 percent. ( b ) the division of climate productivibilty is situated on the third degree and fourth class western area in east of chian

    4 、雅安市土地自然生產潛力與目前的實際生產水平比較，其增產潛力平均為23 . 53 ，說明農業技術和管理措施等的增產潛力較大；將目前土地的實際生產水平與15年前比較，土地的實際生產水平逐年上升，年均遞增0 . 64 ，顯然，土地的自然生產潛力是可以通過各種農技措施來挖掘的。
  19. Abstract : wuxian county is a typical area as it is well developed but lack of land resources. the paper discusses the existing problems on land use based on the analysis of the conditions and characteristics of land use in wuxian. measures concerning improvement of land productivity and development of sustainable utilization of land resources are proposed

    文摘:在分析了吳縣市的土地利用現狀和土地利用特點的基礎上，指出了土地利用中存在的問題，提出了本地區土地資源可持續利用的對策。
  20. The results can be used to understand dynamics of soil nutrient transfer in slope land, provide essential for establishing model of soil potassium loss by erosion, recommend rational fertilization application, and increase land productivity

    研究成果對深化坡面土壤養分遷移動力學研究有一定的理論意義，可為建立土壤坡面鉀素徑流流失模型提供基礎資料，並對坡地合理施肥、提高土地生產力有一定的指導作用。
分享友人
分享到 Line

分享到臉書