長期乾旱 的英文怎麼說

中文拼音 [zhǎngqīgānhàn]
長期乾旱 英文
a long period of dry weather when there is not enough water
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 乾 : Ⅰ名詞1. （八卦之一） qian, one of the eight diagrams2. （姓氏） a surname Ⅱ形容詞（舊時稱男性的） male
  • 旱 : Ⅰ名1. （沒有降水或降水太少） dry spell; drought 2. （非水田的; 陸地上的） dryland 3. （陸地交通） on land Ⅱ形容詞（乾旱） dry; arid
  • 長期 : over a long period of time; long-term; long range; secular
  1. The study on growth of four varieties alfalfa during seeding period in shandong semiarid area

    四種紫花苜蓿在山東半乾旱地區苗期生長的研究
  2. The ephemerals is a kind of plant starting its new living period using the melting snow water in the early spring. they make use of melting snow water and spring rainwater under certain temperature to grow, then they will finish the life history quickly before hot summer comes

    早春短命植物是一類生長在乾旱區，以早春融雪水啟動其新的生活周期，利用融雪水及春季雨水提供的土壤濕度和一定的溫度生長發育，在炎熱夏季來臨之前迅速完成生活史的一年生草本植物。
  3. The plant is as dry as tinder after this long drought

    植物經過長期乾旱之後乾枯得如同火絨一般。
  4. Weather or not the vegetation restoration and rebuilt can be achieved will largely depend on weather or not sprout can build up the mechanism to resist dry stress. this point of view has been pro - ved by plants living on the natural water. usually the xerophyte has particular ability to endure drought for long term

    植被恢復與重建能否取得進展，在很大程度取決于幼苗期能否完成適旱過渡，這種現象，在依賴自然水源生繁的地區特別明顯。荒漠中自然生長的植被，通常具有耐受長期乾旱的特殊能力。
  5. By analyzing the effect of dry fanning on grain production and the trend of population growth, this paper recommends the walking - type irrigation technique, which is practical and suitable for the situation in various regions of our country, to solve the problems of not being able to sow seeds timely and keeping a full stand of seedlings, so that we can guarantee the national grain production and provision

    摘要通過分析旱地農業對糧食生產的影響及人口增長趨勢，提出採用適合我國基本國情和各地實際情況的、實用的行走式節水灌溉技術，解決因乾旱無法適時播種和保苗這一長期困擾農民的「卡脖子旱」問題，從而保障糧食生產，保障國家糧食供給。
  6. Through cultivating five cold - season turfgrass ( lolium perenne, agrostis stolonifera, festuca rubra, festuca arundinacea, bromus inermis ) in basin, their drought to lerance indexes, including the planting height, the root growth, the relative water content of leaves, the penetration of membrane, were comprehensively evaluated to compare their drought tolerance

    摘要採用盆栽育苗法，在5種冷季型草坪草苗期連續乾旱脅迫下測定植株高度，根系生長，葉片相對含水量和質膜透性等抗旱指標，以綜合評價5種冷季型草坪草的抗旱性能。
  7. The result of experimentation on coupling effect of water and fertilizers on spring corn in the three gorges reservoir area indicate that water stresslead the effect low of highness and lai, and the most effect is made in shooting stage ; it has a significant positive correlation between the yield of corn and biomass, and hasn ' t none significant positive correlation between the yield of corn and the weight of roots ; the coupling effect of water and n is significant, but the coupling effect of water and k is not significant, the maximum yield of corn condition fitting - water and medium n, corn absorbs n has a threshold value during the growth, and using superfluous n is able to prick up soil drought and crop drought ; water is the leading factor which effects the yield of corn, next is n and k

    摘要三峽庫區春玉米盆栽水肥耦合試驗研究結果表明，水分脅迫導致玉米株高和葉面積指數降低，以拔節期受到影響最大；玉米產量與生物量呈顯著正相關關系，產量與根重無顯著正相關關系；水氮耦合效應顯著，適宜水分和中氮處理下玉米的產量最高，玉米生長發育對氮肥的吸收存在一定的閾值，過多施用氮肥會加劇土壤乾旱和作物乾旱，水和鉀耦合效應對玉米產量影響不顯著；水分是影響玉米產量的主導因素，其次是氮效應和鉀效應。
  8. Fifty nine accessions of soybean [ glycine max ( l. ) merr. ] of 301 ones from huanghuaihai and middle - lower changjiang valleys were tested at seedling stage in two years for their drought tolerance by using the mean membership index value averaged over those of plant height, leaf number, root dry weight, stem and leaf dry weight. 4 tolerant accessions ( rank 1 ) and 2 sensitive ones ( rank 5 ) were identified

    摘要從301份大豆品種中按根系類型選取黃淮海和長江中下游地區代表性材料59份，在苗期乾旱脅迫和非脅迫條件下對地上部和地下部性狀進行2年重復鑒定，發現材料間性狀隸屬函數值具有豐富遺傳變異，以株高、葉齡、根干重和莖葉干重隸屬函數的算術平均數為抗旱綜合指標，從中篩選出漢中八月黃、晉豆14 、科豐1號、圓黑豆等強耐旱型（ 1級）材料和臨河大粉青、寧海晚黃豆等乾旱敏感型（ 5級）材料。
  9. The study also reveals the relationship between pasture ' s growth period, yield and their relation to weather factors and the evolvement characters of grassland vegetation under the background of drought climate, and refers to the main factors of the influence on grass - turn - green period as water condition in qinghai lake areas, and the main factors as the quantity of heat in the southern area of qinghai. because of the drought in the " three rivers source area ", the growing season is shortening and the production of the grass is decreasing clearly

    揭示了牧草生育期、產量以及群體結構與氣象因子之間的關系和氣候乾旱化影響下草場植被的演變特徵，提出了影響環湖地區牧草返青期的主要因子是水分條件，影響青南地區牧草返青的主要因子是熱量條件， 「三江源」地區由於氣候乾旱化，導致牧草生長季呈縮短趨勢，牧草產量明顯下降。
  10. In dry area or half dry area, water is one of the main factors for afforesting the highway. it can be solved by designing in a proper way, planting in suitable seasons, ect

    在乾旱、半乾旱地區公路綠化中水是最主要制約因素，通過合理設計、選擇適宜植物生長的時期種植和採用高分子化合物等，從而達到抗旱和防治水毀的目的。
  11. Abstract : in dry area or half dry area, water is one of the main factors for afforesting the highway. it can be solved by designing in a proper way, planting in suitable seasons, ect

    文摘:在乾旱、半乾旱地區公路綠化中水是最主要制約因素，通過合理設計、選擇適宜植物生長的時期種植和採用高分子化合物等，從而達到抗旱和防治水毀的目的。
  12. But there still are some kinds of native xeroph - ytia which have distributed naturally during the long term process of adapta - tion and evolution in arid region. needless to say, it is the most key step to promote the vegetation restoration in desertification area by ascertaining the controlling factor of the natural distribution and observing the adaptation law of the plant living in arid area

    由於水資源的匱乏，乾旱區與濕潤區相比，生物多樣性受到嚴重抑制，但在長期的適應演化過程中，此區亦分佈著種類不乏的旱生植物群落，洞察現存各類植物對環境的適應規律，顯然是促進荒漠區植被恢復的重要環節。
  13. For a. sylvestris, it is usually the second year that plant flower and procreate and company with clone. the time of procreate would be delayed for

    二年齡明黨參和川明參未有死亡，而乾旱條件下的峨參在營養生長期仍有40植株死亡。
  14. The ground is as hard as stone after the drought

    長期乾旱之後土地硬得就像石頭一樣。
  15. The ground is as hard as stone after the drought.

    長期乾旱之後土地硬得就像石頭一樣。
  16. The long drought caused an acute shortage of water in the city

    長期乾旱使這座城市嚴重缺水。
  17. Drier conditions lead longer droughts, hydropower electricity production decreases

    持續長期乾旱減少水力發電能力
  18. It was showed that the drought resistance among three trees were different, p. orientalis was strongest, then wes p. tabulaeformis, the thi rd was r. pseudoacacia

    試驗表明，各樹種忍耐長期乾旱的能力不同，側柏最強，油松次之，刺槐最差，表明了各樹種林分抗旱穩定性的不同。
  19. The results showed that drought stress at flowering stage delayed the date of the max filling - speed ( dmfs ), and weakened the rate of average growth ( rag ) and the max filling - speed ( mfs ), and then shorten linear dry matter accumulation phase and leveling - off of dry matter accumulation phase

    結果表明：花期乾旱導致玉米最大灌槳速度出現時間推遲、籽粒相對生長率和最大灌裝速度減弱、干物質線性積累期和干物質穩定增長期顯著縮短，乾旱結束后植株通過提高幹物質線性積累期的持續時間和干重，以彌補前期乾旱的損失。
  20. But along with the population increase, economic development and natural condition change, the dry and water deficient situation becomes increasingly serious, the drought occurrence frequency, scope and impacting area expand successively, in the meanwhile, some structural and systematic obstacles existed in long - term drought fighting work have emerged and the drought fighting work faces unprecedented trial

    但是隨著我國人口增加，經濟發展和自然條件變化，我國乾旱缺水的形勢日益嚴峻，旱災發生的頻率、范圍和影響的領域不斷擴大，同時，長期抗旱工作中存在的一些體制、制度性障礙也顯露出來，抗旱工作面臨前所未有的考驗。
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