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wheat     
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  小麦
    Study on Transfer of Chitinase Gene into Wheat
    几丁质酶(Chitinase)基因转化小麦的研究
短句来源
    STUDY ON QTL FOR ABSORPTION AND UTILIZATION OF NITROGEN, PHOSPHORUS, AND POTASSIUM IN WHEAT (Triticum aestivum L.) SEEDLINGS
    小麦(Triticum aestivum L.)苗期氮、磷、钾吸收和利用的数量性状位点研究
短句来源
    Transgenic Wheat Resistant to Barley Yellow Dwarf Virus GPV Using Replicase Gene
    大麦黄矮病毒GPV株系复制酶基因介导的抗病毒转基因小麦的研究
短句来源
    PHYSIOLOGICAL BASIS AND REGULATION OF FLORET DEVELOPMENT IN WHEAT
    小麦小花发育的生理基础及调控研究
短句来源
    Study on the application of molecular marker technique in breeding wheat for powdery mildew resistance and constructing DNA fingerfrinting of wheat
    分子标记技术在小麦抗白粉病育种及指纹图谱分析中的应用研究
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    Study on Biochemical and Genetic Basis of Quality Breeding in Common Wheat (Triticum Aestivum L.) in Southwest China
    中国西南区普通小(Triticum Aestivum L.)优质育种的生化遗传基础研究
短句来源
    Construction of H.villosa cDNA Library, Cloning and Function Analysis of Wheat (Triticum Aestivum) Resistance Relative Gene
    簇毛cDNA文库构建及小抗病相关基因克隆与功能分析
短句来源
    SOME BASIC PROBLEMS ON THE METHODS OF RADIATION BREEDING IN RICE AND WHEAT
    稻辐射育种方法的若干基本问题
短句来源
    STUDY ON THE HIGH-YIELDING CULTIVATION OF WHEAT AFTER RICE
    稻茬高产栽培技术研究
短句来源
    STUDY OF LINKAGE IN THE CROSS OF YANGMAI NO.1×DWARF NO.1 IN COMMON WHEAT
    普通小1号(Tal-)×矮变1号杂交的连锁遗传研究(初报)
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  冬小麦
    Molecular Cytogenetic analysis of Chinese winter wheat germplasm Aimengniu
    冬小麦种质“矮孟牛”的分子细胞遗传学研究
短句来源
    Construction of Dynamic Model and Analysis of Dynamic Character for Growth of Root and Shoot of Winter Wheat under Fluctuated Soil Water Conditions
    土壤水变动下冬小麦根、冠生长动态模型的建立及根、冠动态特性分析
短句来源
    Diagnosis of N Status of Winter Wheat Using Digital Image Processing and Soil-Plant Testing Techniques
    应用数字图像技术与土壤植株测试进行冬小麦氮营养诊断
短句来源
    Characterization and Physiological and Genetic Analysis of Phosphorus Efficiency in Winter Wheat Germplasms
    冬小麦磷高效种质鉴定及其生理遗传分析
短句来源
    Study on Estimating Canopy Surface Temperature of Winter Wheat by Using NOAA Data and Its Primary Application
    基于NOAA卫星的冬小麦冠层表面温度估算及初步应用的研究
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  普通小麦
    Transfer, Identification and Expression of Barley α-Amylase Inhibitor Gene Isa-H1 in Wheat
    大麦2H染色体上的α-淀粉酶抑制蛋白基因Isa-H1向普通小麦的导入、鉴定及表达
短句来源
    Genetic Analysis and QTL Mapping of Quality Traits in Common Wheat
    普通小麦品质性状遗传与QTL分析
短句来源
    Isolation and Characterization of Myb and Dof Genes in Hexaploid Wheat (Triticum Aestivum. L)
    普通小麦Myb和Dof转录因子家族基因的克隆和表达研究
短句来源
    Study on Biochemical and Genetic Basis of Quality Breeding in Common Wheat (Triticum Aestivum L.) in Southwest China
    中国西南麦区普通小麦(Triticum Aestivum L.)优质育种的生化遗传基础研究
短句来源
    Genetics Study and Analysis of QTLs for Fusarium Head Blight Resistance in Wheat DH Populations
    普通小麦DH群体赤霉病抗性遗传研究及QTL检测和效应分析
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  wheat
Etiolated wheat coleptiles were inhibited 100 and 40%, respectively, at 10-3 and 10-4 M.
      
The results showed that there were significantly positive linear relationships between the inhibitory rates of wheat seed germination and root elongation and the CODcr of the mother liquor scraps.
      
The toxicity of MSG wastewater to the test crops was in the order of tomato >amp;gt; Chinese cabbage >amp;gt; wheat, indicating that tomato was the most sensitive to the wastewater, and could be considered as an ideal toxic bioindicator.
      
The initial stage of amino acid metabolism was intensified in germinating wheat seeds with exogenous glutamine and proline.
      
The strain formed extracellular phenol oxidases during surface growth on a liquid medium in the presence of guayacol and copper sulfate, as well as during submerged cultivation in liquid medium containing wheat bran and sugar beet pulp.
      
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Field practice has long proved that the application of straw ash on newly reclaimed paddy soils derived from the lacustrine deposit in the flooded areas of Li-Shia-Ho,Kiangsu, greatly increases the yields of wheat,barley and other upland crops.Field experimentes were conducted to compare the effect of superphosphate with straw ash as basic dressings at a same level of phosphate fertilizer.Results revealed that superphosphate has a similar effect as straw ash. Laboratory investigations gave evidences that...

Field practice has long proved that the application of straw ash on newly reclaimed paddy soils derived from the lacustrine deposit in the flooded areas of Li-Shia-Ho,Kiangsu, greatly increases the yields of wheat,barley and other upland crops.Field experimentes were conducted to compare the effect of superphosphate with straw ash as basic dressings at a same level of phosphate fertilizer.Results revealed that superphosphate has a similar effect as straw ash. Laboratory investigations gave evidences that fixation of available soil phosphorus takes place as the flooded soil dried out through reclamation and drainage.

1.沤田水稻土具有特殊的化学和物理化学特性,在沤改旱过程中,速效性磷遭受显著的固定,速效性磷的缺乏,可能是沤改旱田旱作低产的主要原因之一。2.典型调查及大田对比试验材料表明,草木灰对沤改旱田旱作(三麦、绿肥)有显著的增产效果,其增产幅度因沤田类型、沤改旱的其他农业技术措施的配合情况等不同而不同。3.草木灰具有显著肥效的原因很多,如提高土温、疏松土壤等,但其主导因素可能与其含有较丰富的速效性磷有关。 4.过磷酸钙对沤改旱田旱作有显著的增产效果。每亩施用过磷酸钙30斤作基肥,其肥效与500斤稻草灰相等,大麦产量较对照增产95.8%。单施(基肥)硫酸钾、碳酸钙或硫酸铵对沤改旱田大麦也具有增产效果,但其肥效远逊于过磷酸钙。5.过磷酸钙拌种可减少肥料用量,每亩10斤过磷酸钙拌种,大麦产量较对照可增产58.7%。无论过磷酸钙或草木灰均以用作基肥效果最大,施用时间愈迟,其肥效将愈降低。

Chemical analysis of seperate plant organs of green manures at various stages of growth collected from representative districts of Central China showed that the accumulation of green mass and the absorption of nutrients chiefly occurred during the last 30 to 45 days before plowing-under.Astragalus sinicus,the principal leguminous green manure in central China,showed some correlation in P and K contents with soil fertility,whereas the nitrogen content remained practically constant regardless the nutritive status...

Chemical analysis of seperate plant organs of green manures at various stages of growth collected from representative districts of Central China showed that the accumulation of green mass and the absorption of nutrients chiefly occurred during the last 30 to 45 days before plowing-under.Astragalus sinicus,the principal leguminous green manure in central China,showed some correlation in P and K contents with soil fertility,whereas the nitrogen content remained practically constant regardless the nutritive status of the soil.It was esti- mated that the nodular bacteria of Astragalus sinicus assimilated about 105 kg of nitrogen per hectare at the yield of 37,500 kg of green mass. Green-house experiments revealed that manure crops possessed a stronger power in assi- milating their phosphorus from rock phosphate and magnesium from serpentine as compared with winter wheat.Laboratory experiments with exciled root also demonstrated that the root systems of manure crops have a stronger absorption power,greater cation-exchange capacity,larger absorbing surface area and more intensive rate of respiration than that of the wheat.Among the tested manure crops,Raphanus sativus,a cruciferous plant widely planted on infertile soils,has been proved the best variety.

1.紫云英与苕子的绿色体一般以初花期前后或盛花期增长最快。紫云英的根系主要分布在0—10厘米,在5,000斤鲜草产量时,1平方尺内约有6克左右的干根。地上与地下部分的干物质比为6.5∶1,鲜重比为11∶1,目前一般对地下部分的产量估计似乎有些偏高。2.紫云英等含氮、磷、钾的百分率均随绿色体的增长而减低,紫云英在盛花期含 N2.7%,P_2O_5 0.65%,K_2O2.5%,CaO 1.6%,含氮量与土壤的肥沃程度没有明显的相关性,含磷量与含钾量则与土壤中磷钾含量成正相关。根部所含的养分一般均低于地上部分,叶子的氮、磷百分率远较茎等部位为高。苕子盛花期含 N 3.3%左右,其他成分大体与紫云英相近。萝卜菜在盛花期的含 N 量为1.7%,K_2O 量较高,一般是 N 与 P_2O_5的总和,含 CaO量恒多于紫云英,一般在2.0%以上。油菜的成分大体与萝卜菜相近。3.各种绿肥在一定生长时期中地上部分的阳离子总量大体为一常数。紫云英在盛花期的阳离子总量维持在110毫当量左右,萝卜菜的含量还更高。4.萝卜菜、紫云英、苕子与小麦等四种植物对蛇纹石都能利用,但对钾长石不能利用。磷灰石的施用对增产很显著,根据增产百分率的...

1.紫云英与苕子的绿色体一般以初花期前后或盛花期增长最快。紫云英的根系主要分布在0—10厘米,在5,000斤鲜草产量时,1平方尺内约有6克左右的干根。地上与地下部分的干物质比为6.5∶1,鲜重比为11∶1,目前一般对地下部分的产量估计似乎有些偏高。2.紫云英等含氮、磷、钾的百分率均随绿色体的增长而减低,紫云英在盛花期含 N2.7%,P_2O_5 0.65%,K_2O2.5%,CaO 1.6%,含氮量与土壤的肥沃程度没有明显的相关性,含磷量与含钾量则与土壤中磷钾含量成正相关。根部所含的养分一般均低于地上部分,叶子的氮、磷百分率远较茎等部位为高。苕子盛花期含 N 3.3%左右,其他成分大体与紫云英相近。萝卜菜在盛花期的含 N 量为1.7%,K_2O 量较高,一般是 N 与 P_2O_5的总和,含 CaO量恒多于紫云英,一般在2.0%以上。油菜的成分大体与萝卜菜相近。3.各种绿肥在一定生长时期中地上部分的阳离子总量大体为一常数。紫云英在盛花期的阳离子总量维持在110毫当量左右,萝卜菜的含量还更高。4.萝卜菜、紫云英、苕子与小麦等四种植物对蛇纹石都能利用,但对钾长石不能利用。磷灰石的施用对增产很显著,根据增产百分率的大小,可排列成如下的次序:紫云英>萝卜菜>苕子>小麦。在某种程度上反映植物对难溶性物质的利用能力的三个指标(根的阳离子交换量、根的吸收面积与根的呼吸强度),对于四种植物,其大小次序基本上与其对磷灰石的利用能力的排列次序相一致。因此从各方面来看,这几种绿肥的吸收养分的能力,都较象小麦这样的农作物为强。5.绿肥是一种成本低收效大的肥料。在紫云英鲜草产量5,000斤时,地上与地下部分所合的氮、磷、钾分别相当于硫酸铵105斤、过磷酸钙22.5斤、氯化钾36斤。假定其中的氮素有2/3是来自大气,则“天然工厂”制造了70斤左右的硫酸铵。中稻亩产600斤时所取走的氮素约相当于50斤硫酸铵,因此单就来自大气中的这一部分来讲,对中稻的供应也还是有余。从全国范围来看,凡是绿肥面积大的地区,也就是稻麦产量高而稳定的地区。目前各地绿肥的种植面积与产量都极不平衡,还有很大的潜力。

Photophosphorylation of isolated chloroplasts mediated by phenazine methosulphate(PMS) menadione bisulphite(Vit. K), flavinmononucleotide(FMN) as well as by ferricyanide[Fe(CN)_6] and its coupled Hill reaction was studied in flashing light. Natural sunlight focused by convex lenses to an intensity of about 300,000lux and intercepted by a rotating disc was used as the flashing source(Fig. 1). Chloroplasts were prepared from young leaves of water-cultured wheat seedlings as described earlier. ATP was measured...

Photophosphorylation of isolated chloroplasts mediated by phenazine methosulphate(PMS) menadione bisulphite(Vit. K), flavinmononucleotide(FMN) as well as by ferricyanide[Fe(CN)_6] and its coupled Hill reaction was studied in flashing light. Natural sunlight focused by convex lenses to an intensity of about 300,000lux and intercepted by a rotating disc was used as the flashing source(Fig. 1). Chloroplasts were prepared from young leaves of water-cultured wheat seedlings as described earlier. ATP was measured as ~(32)P incorporated by the method of Nielsen and Lehninger.With flashes of 1 millisecond, the yield per flash increases with, the length of the dark time up to a maximum. The maximum dark time for the Vit. K and Fe(CN)_6 coupled Hill reaction is 0.05-0.07 sec at 10-20℃(Fig. 2, 3 & 4). For PMS, the maximum dark time is 0.03 sec(Fig. 2). Higher temperature shortens the dark time in both Vit. K and PMS systems. The maximum yield per flash is higher in the Vit. K system than with PMS. Yield per flash increases with temperature(Fig. 2).o-Phenanthroline(3×10~(-5)M) inhibits the dark reaction in both systems to a similar extent. The maximum yield per flash is inhibited by about 85% in the Vit. K system and only 40% in the PMS system. sThe similarity of the dark time requirement of the photophosphorylation mediated by Vit. K, FMN, Fe(CN)_6 and its coupled Hill reaction to that of photosynthesis indicates that the limiting reaction is perhaps common to all, involving the photosynthetic electron-carrier chain, including the participation of molecular oxygen. The short dark in(?)erval required by the PMS system as well as its different response to o-phenanthroline shows that PMS mediates a different pathway probably a"short cut".Further investigations on the dependence of yield on the flash duration and its relation to temperature, cofactors and inhibitors will be reported in a succeeding paper.

1.在1×10~(-3)秒強閃光下,Vit K,FMN及Fe(CN)_6~≡偶联的光合磷酸化的每閃产量达到最高所需的暗时間相等,在10—20度时为0.05—0.07秒。这与光合作用及希尔反应的暗反应速度相似。而循环光合磷酸化所需的暗时間却要短1—2倍。2.Vit K所导致的光合磷酸化的最高每閃产量高于PMS系統,且都受温度及閃时长短的影响。3.Vit K系統的最高每閃产量被3×10~(-5)二氮杂菲抑制了85%,而PMS系統則仅抑制40%。两系統的暗反应都受到程度相近的抑制。4.文章討論了PMS及Vit K系統途径的差异与暗反应速度之間的关系。

 
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