defoliation

n.  落叶

BNC.49544 / COCA.37839



柯林斯词典

  1. VERB (尤指战时)使落叶,去掉…的叶子,毁坏(某一地区)的绿色植物
    To defoliate an area or the plants in it means to cause the leaves on the plants to fall off or be destroyed. This is done especially in war to remove protection from an enemy.
    1. Dioxin was the ingredient in Agent Orange, used to defoliate Vietnam.
      越南战场上用于毁灭林区的“橙剂”,其成分是二氧杂芑。

双语例句

  1. Who leave the tree branch defoliation get pain and sufferings and have to will listen.
    离开树枝落叶得痛苦又有谁会去聆听。
  2. Small black sawfly native to Europe but established in eastern United States; larvae mine the leaves of birches causing serious defoliation.
    原产于欧洲但定居在美国东部的黑色小叶蜂;幼虫在桦树的叶子上钻洞导致严重的落叶发生。
  3. Till that time, so-called me, so-called Dao, aren't they just like the defoliation in autumn or the deadwood in winter? and they will be buried by a heap of loess?
    所谓的自我,所谓的道,不正是秋天的落叶和冬日的枯木的真实写照吗?他们最终会被黄土所掩埋。
  4. Effect of Artificial Defoliation on Leaf Net Photosynthetic Rate of Tilia amurensis Young Trees
    人为去叶对紫椴幼树叶片净光合速率的影响
  5. The debate focused on the issue of poisonous leaf-falling agents. Chemical Adjustment and Control of Defoliation of the Plane Tree and Preparation of Defoliant
    争论的核心针对有毒落叶剂的问题。悬铃木集中落叶的化学调控研究及落叶剂的配制筛选
  6. Defoliation is hovering in the air, writing a song of aesthetic music, which is to thank earth for its nourishment;
    落叶在空中盘旋,谱写着一曲唯美的乐章,那是对滋养它的大地的感恩;
  7. Elaine plucked a twig from the offending japonica and set about its systematic defoliation with savage concentration.
    埃莱恩从难看的山茶上折了个嫩枝,开始猛烈的收集系统的落叶。
  8. Dry Matter and Protein Yields of Leymus Chinensis Grassland Changes Induced by Defoliation; The sheep usually graze in the grass land.
    人工羊草草地产量和质量对刈割的反映羊通常在草地吃草。
  9. Effects of after-anthesis defoliation on grain yield formation and water use efficiency of winter wheat
    花后脱叶对冬小麦产量形成和水分利用效率的影响
  10. Effects of Postharvest Temperature on Defoliation and Stress-Resistant Physiology of Potted Ficus ginseng
    贮运温度对盆栽榕树落叶及抗性生理的影响
  11. The N content of defoliation is decreased gradually at the seedling period and keeps steady after the bud period.
    苗期落叶的磷含量逐渐降低,蕾薹期降至最低值,角果期后又略有升高。
  12. Defoliation is achieved by adding elements which have a greater affinity than iron for oxygen.
    脱氧是加进同氧的亲和力比铁更大的元素来实现的。
  13. B: Yeah. Red leaves, yellow leaves, orange and brown. Effect of Artificial Defoliation on Leaf Net Photosynthetic Rate of Tilia amurensis Young Trees
    耶!红树叶,黄树叶,橙树叶和棕树叶。人为去叶对紫椴幼树叶片净光合速率的影响
  14. Any of various deciduous trees such as the tulip tree, basswood, or cottonwood. Effect of Artificial Defoliation on Leaf Net Photosynthetic Rate of Tilia amurensis Young Trees
    白木树如美国鹅掌揪、椴、三角叶杨等各种落叶树人为去叶对紫椴幼树叶片净光合速率的影响
  15. But be like deciduous tree would at the winter breeze come tremble the whole body defoliation similar, the things of the past can enjoy in retrospect.
    但就像落叶树会在冬风来时抖掉一身落叶一样,往事只能回味。
  16. And provenance No. 1 of silver linden has similar phenophase with Tilia amurensis from date of germination to defoliation.
    银叶椴与当地树种紫椴相比,种源1从芽萌动一直到落叶末各物候期与紫椴最为接近。
  17. A experiment was conducted to study the effect of defoliation at different growth stages on sesame capsule development and yield.
    采用定株观察,以芝麻生长正常单株为对照,研究不同生育时期,不同蒴果发育时期去叶,对芝麻农艺性状和单株产量的影响。
  18. Methods and criteria for sampling and assessment of air-pollution deposition in the forest, soil and soil solution, stand growth and defoliation/ discoloration of crown are discussed.
    论述了森林中的大气污染沉降物、森林生长、森林土壤及土壤溶液等与森林健康状态有关的监测内容和方法,重点介绍了树冠落叶和退色的直接观测估计监测方法。
  19. Effect of defoliation on capsule development and yield and practics to prolong leaf functional period for high yield in sesame
    芝麻不同时期去叶对蒴果发育和产量的影响及保叶增产措施
  20. Influence of Defoliation on Yield of Spring Cabbage
    人工去叶对春甘蓝产量的影响
  21. Overshadow treatment before defoliation could reduce GA3 content slightly, but its effect on ABA content was little.
    落叶前遮荫处理使GA3含量稍有降低,但对ABA影响不大。
  22. Effects of defloration and defoliation on vegetative growth and senescence of early soybean
    早熟大豆去花(荚)和去叶片对营养生长和衰老影响的初步研究
  23. Effect of defoliation on resistance of Chinese pine to Dendrolimus spectabilis and the pest control strategy
    失叶对油松抗赤松毛虫的影响及其防治策略
  24. Effect of nitrogen fertilizer application and defoliation intervals on root vigour and crude protein in hybrid Pennisetum
    氮肥水平和刈割间隔对杂交狼尾草根系活力和粗蛋白含量的影响
  25. After defoliation, one-year seedlings could live through the winter in greenhouse or burring outdoor with snow.
    当年生播种苗落叶后,可采用温室内越冬或室外雪藏越冬;
  26. Effects of environmental factors on the progress of defoliation dormancy and flowering of late-ripening cultivar of Prunus persica
    环境因素对晚熟桃落叶休眠与开花进程的影响
  27. The Effects of Shading and Defoliation on Translocation of Carbon Resources between Clonal Ramets of Leymus chinensis
    遮光和去叶处理对羊草(Leymuschinensis)无性系分株间碳物质转移的影响
  28. The results indicated that the yield of sesame decreased by defoliation.
    结果表明,随着芝麻生育进程,终花期、封顶期、盛花期去叶减产幅度递增。
  29. Defoliation character and the DBH, growth phase and the height character was positively correlated to each other moderately;
    开花性状与树高、胸径等生长性状均呈负相关,落叶早晚与胸径、生长期与树高均呈中度正相关;
  30. The seasonal variation of total nonstructural carbohydrates ( TNC) concentration in crowns and roots of Kobresia humilis were determined during 1993~ 1994.The effects of defoliation on TNC concentration and the relationship between the aboveground growth and TNC concentration in crown were analysed.
    研究了矮生嵩草(Kobresiahumilis)根系和根颈中总非结构碳水化合物(TNC)含量的季节变化,对根颈中TNC含量与地上部分生长的关系以及刈牧对TNC的影响进行了分析。

英英释义

noun

  1. causing the leaves of trees and other plants to fall off (as by the use of chemicals)

    1. the loss of foliage