禾草

hé cǎo
  • dogstail;grass
禾草禾草
禾草 [hé cǎo]
  • [grass] 禾本科植物的通称。单子叶植物的叶基部鞘组成,紧包着茎,犹如一个裂开的管子,上部是一片狭长而有平行脉的叶片

禾草[hé cǎo]
  1. 羊草(Leymuschinensis)是多年生根茎型禾草,具有耐干旱、耐贫瘠、耐盐碱等生物生态学特性。

    Leymus chinensis is perennial , rhizome grass that has capacity of tolerance to drought , leanness , and salt - alkali .

  2. N添加和N、P共同添加后,禾草通过光合速率的上升增加了生物量的积累,进而通过竞争排除使杂类草的物种多样性减少。

    The increase in photosynthetic rates of Grass caused the accumulation in biomass , and then triggered the decline of the species richness of Forbs functional groups via competition exclusion when N added and N and P added together . 5 .

  3. 从美国选育的C4纤维禾草可以看出,多年生的C4纤维禾草具有:①光合效率高,而水耗低;

    C_4 plants bred in USA have following properties : ( 1 ) Their photosynthetic efficiency is high but their water consumption is low ;

  4. F/C<1,说明其生产效率较典型草原低,而高于同地区的芦苇种群及陕北黄土高原的禾草群落;

    F / C < 1 implied that its production efficiency was lower than that in typical grassland , but higher than that of Phragmites communis population in the same area and that of grass communty on Yellow Plateau in the north of Shannxi ;

  5. 辅助观察禾草类Kranz结构。

    The Kranz structure was observed only for Gramineae plants .

  6. 通过磁珠富集文库法成功开发了12对醉马草SSR引物,且证明其中90%的引物可以成功应用于芨芨草属其它禾草的遗传多样性研究。

    Twelve microsatellite markers were developed for A. inebrians using the magic-beads , we documented that 90 % of that 12 primers could be used in study of genetics diversity of other species of Achnatherum . 6 .

  7. 对小麦的药害试验表明,口恶唑禾草灵用量在100ml/667m2以下,药后15d及30d,对小麦生长基本无影响。

    The safe experiment showed that the growth of wheat was effected in indifferent degree when the dosages were lower at 100ml / 667m2 after spraying 15 and 30 days .

  8. 从过渡带6种禾草97份褐斑病病株标本中,分离得到了73个丝核菌分离物,用DAPI染色法进行了菌丝核相观察。

    73 isolates of Rhizoctonia were obtained from 97 specimen , 6 species of infected turf-grasses , The nuclei were stained to determine the number in vegetative hyphal cells by DAPI staining nuclear technique .

  9. 结果表明,增产菌对高山禾草型草地牧草具有明显的增产效果,最佳施用量为150g/hm2,施用期为禾草拔节期,施用次数为1~2次,增产幅度为16.75%~24.9%。

    The results showed that it had significantly increasing yield effect on alpine grasses , the optimum amount applied was 150 g / hm 2 , and applied in jointing period , the applied times were one to two , the yield increased by 16.75 % to 24 % .

  10. 中度放牧时为羊草+冷蒿+隐子草+丛生禾草群落;

    Frigida + Cleistogenes squarrosa + clustered grasses when Middle-grazing and A.

  11. 内生真菌-禾草共生体内生物碱的种类及其生理生态作用

    Types of alkaloids in fungal endophyte-grass symbiont and their ecophysiological role

  12. 环境胁迫对禾草&内生真菌共生体的影响

    Influence on Forages Grass and Fungal Endophyte Symbiotic in Environment Stress

  13. 美洲广泛种植的旧大陆禾草的一个属。

    A genus of Old World grasses widely cultivated in America .

  14. 本文研究了用液相色谱法测定乳氟禾草灵的方法。

    The method to determine by liquid lambda-cyhalothrin chromatograph was studied .

  15. 几种热带禾草烧草效应的初步观察

    The Preliminary Observation on the Effect of Burning to Several Grasses

  16. 盐胁迫对7种根茎类禾草叶片过氧化物酶活性的影响

    Peroxidase Isozyme Activity of 7 Rhizomatose Grass Leaves Under Salt Stress

  17. 新疆阿勒泰草地野生禾草资源及饲用评价

    Evaluation of wild grass species with forage potential in Altay prefecture

  18. 根茎禾草营养累积动态规律研究

    Study on the Dynamic law of Nutrient Accumulation of Rhizome Grass

  19. 具根茎的多年生禾草和一年生恶性杂草交替占优势的草坪杂草阶段;

    Alternative stage between perennial herb with rhizome and annual malignant weed ;

  20. 刈割高度对禾草丛分蘖结构的影响

    The Influence of Cutting Heights on Tiller Composition in Defoliated Sward Population

  21. 草坪禾草丝核菌的核相研究

    Nucleus number of Rhizoctonia mycelium cells from turf-grasses in China

  22. 北美的一种有禾草状叶的水生草本植物,具黄色星状花。

    Grassy-leaved North American aquatic plant with yellow star-shaped blossoms .

  23. 多年生禾草混播草地初级生产力及群落动态研究

    Primary productivity and community dynamics of mixed perennial grass pasture

  24. 指出剪草是禾草草坪管理的核心内容。

    Turf mowing is a core part of turfgrass management .

  25. 一根轻微的禾草也可以告知你大风的趋势。

    A straw may show which way the wind blows .

  26. 根茎类禾草耐盐性评价及生理基础的研究

    Assessment of Salt Tolerance and Physiology Basis of Rhizomatose Grass

  27. 苏州市区禾草草坪夏季杂草的调查

    Preliminary Investigation of Weeds in Gramineous Grass Lawn in Suzhou in Summer

  28. 根茎类禾草成株根茎移栽苗的成活率大于播种苗的成活率。

    The survival rate of transplanting was higher than sowing .

  29. 优良禾草苇状羊茅改良退化人工草地试验研究

    A study on improving degraded sown grassland with tall fescue

  30. 人工调控对禾草混播草地群落特征的影响

    Artificial Control Impact on Community Character of Gramineous Mixed Grassland