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nitrogenous
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    The Effect of Nitrogenous, Phosphatic, and Potassium Fertilizers on Fuji Apple Trees
    红富士苹果树施用磷钾化肥的效果
短句来源
    The influence of nitrogenous and potash fertilizer quantity on the quality of asparagus seedling
    钾肥用量对芦笋幼苗质量的影响
短句来源
    It can accelerate the growth of the seedlings when fertilized pure nitrogenous fertilizer 200mg, P2O5 300mg, K2O 200mg per-kilogram glebe soil.
    初步确定当每千克土中施纯200mg、P_2O_5300mg、K_2O200mg时,对野生玫瑰幼苗的生长有一定的促进作用。
短句来源
    It is suggested that the nitrogenous fertilization should be kept at 15-17kg, as well as the ratio of P2O5/N, K2O/N were respectively maintained at 0.4-0.7 and 0.6-0.9 was suggested.
    建议哈密瓜栽培的纯施用量控制在15kg~17kg/667m~2,P_2O_5和K_2O与N的比例应保持在0.4~0.7和0.6~0.9。
短句来源
    When nitrogenous fertilizers are combined with organic fertilizer to be applied to rape, one of the best ratios of combined application of urea and horse dung is 1∶2, the total application amount of urea and cow dung is lower 750 kg/hm~2, and urea ratio of combined application with cow dung should be lower than 1∶3.
    肥与有机肥配合施用,尿素与马粪配施比例以1∶2为最佳; 尿素与牛粪的总施量应控制在750kg/hm2以下,且其配比中尿素用量应低于1∶3。
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    Specific output of nitrogenous fertilizer of organic and integrated were more 6.2% and 6.3% than conventional;
    有机、无公害生产模式每公斤氮的产出量比常规生产模式高6.2%和6.3%;
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    plant height of celery in organic and integrated patterns were respectively over 20.5% and 10.3%, output of each kilogram nitrogenous in organic and integrated patterns were higher 13.7% and 25.2%.
    有机、无公害生产模式芹菜的株高比常规生产模式分别高20.5%和10.3%,每公斤氮的产出量有机、无公害生产模式比常规生产模式分别高13.7%和25.2%。
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    7. Under NaCl and Na2SO4 stress, the NRA of Elaeagnus moorarqftii leaves emerged the descending trend with salt stress concentration and time increasing, and high-speed falling of NRA under Na2SO4 was helpful to prevent accumulation of toxic nitrogenous compounds, so it possessed higher Na2SO4 salt-resistance.
    7.NaCl、Na_2SO_4胁迫下,大果沙枣叶片硝酸还原酶活性(NRA)随盐浓度的增加及胁迫时间的延长活性减弱,其中Na_2SO_4胁迫下,NRA下降较快,体内积累有毒氮化物少,因而受害较轻,大果沙枣抗Na_2SO_4能力较强。
短句来源
    The nitrogenous activity of nodule was determined using acetylene reduction method,the results showedhigh nitrogenous activity of 31.615μmolC2H4/(g.h)in nodule sample ofDesmodiumtrilourum.
    用乙炔还原法对根瘤样品进行固氮酶活性测定,结果为31.615μmolC2H4/(g.h)。
短句来源
    INVESTIGATION ON NITROGENOUS CONCENTRATION OF NUTRIENT SOLUTION FOR PAK CHOI
    不结球白菜营养液氮素浓度的研究
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  nitrogenous
Preparation of nitrogenous polysaccharide-supported ironporphyrins and their catalysis for the aerobic oxidation of cyclohexane
      
It is shown that the coordination of the nitrogenous polysaccharide to ironporphyrin had an important influence on both the conversion and selectivity of the aerobic oxidation of cyclohexane catalyzed by ironporphyrin.
      
1,3-Dioxolane series cationic lipids containing residues of aliphatic or heterocyclic nitrogenous bases were synthesized.
      
These compounds undergo irreversible 1,3-H shift catalyzed by nitrogenous bases to give phosphorylated imines CF3CH[P(O)(OAlk)2]N=CHR.
      
The latter reacted with nitrogenous bases to form the corresponding salts.
      
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It was found that both a long period of water stress and a heavy a-pplication of nitrogenous fertilizer during the rossetting and foreheading stages were the main environmental factors causing the internal tipburn of Chinese cabbage and had a significant influence on the development of the disease in head storage. The longer the heads were stored, the more severe disease occured. In seriously diseased leaves, the ratio of calcium content in midrib and blade was the highest and the calcium content was significantly...

It was found that both a long period of water stress and a heavy a-pplication of nitrogenous fertilizer during the rossetting and foreheading stages were the main environmental factors causing the internal tipburn of Chinese cabbage and had a significant influence on the development of the disease in head storage. The longer the heads were stored, the more severe disease occured. In seriously diseased leaves, the ratio of calcium content in midrib and blade was the highest and the calcium content was significantly low in comparison with that in the normal leaves while its nitrogen content was higher, in consquence, the ratio of calcium and hi-trogen content was smaller. In the disease causing blocks, keeping the s-oil moist and decreasing the amount of nitrogen fertilizer application were regarded as the effective agricultural methods to control this kind of disorder.

本试验证明,在大白菜的莲座期和结球初期,水分控制时间超过17天以上,0~10厘米的土壤含水量,低于12%以下,氮肥量施用过多(每亩追肥量折合纯氮高于40斤以上)是引起大白菜干烧心病的重要环境条件,多氮区发病率较其它低氮区高4~7倍,病情指数高5~14倍。它们对大白菜贮藏期发病也有明显的影响,随贮藏时期的延长而加重。干烧心发病严重部位,与健康株相比,其同叶位的叶柄与叶片含钙比值最高,叶片中的含钙量也比正常株显著减少,而含氮量较高,Ca/N比值小。在干烧心发病地块,注意浇水,保持土壤和近地面空气湿度,适量控制氮素肥料的施用是减轻或防治干烧心病的农业措施之一。

This paper deals with the differences of the contents of soluble nitrogenous compounds, soluble, sugars and phenolic compounds in the leaves between male and female plants of Chinese torreya (Torreya grandis). It is indicated that the leaf of the male plant is higher in soluble sugar content than the leaf of the female, but there is no marked difference in the content of soluble nitrogenous compounds. The content of phenolic compounds in the leaf consists of 9 components where obvious difference...

This paper deals with the differences of the contents of soluble nitrogenous compounds, soluble, sugars and phenolic compounds in the leaves between male and female plants of Chinese torreya (Torreya grandis). It is indicated that the leaf of the male plant is higher in soluble sugar content than the leaf of the female, but there is no marked difference in the content of soluble nitrogenous compounds. The content of phenolic compounds in the leaf consists of 9 components where obvious difference is brought out in the phenolic content with different components between male and female plants. In sex-unidentified seedlings and young trees, a similar chromatographic component pattern of phenolic compounds may also be found. Therefore, it suggests that the chromatographic component pattern, combined with the soluble sugar content, may be employed as the biochemical criteria for the sex identification of Chinese torreya.

香榧雄株叶片中的可溶性糖的含量高于雌株,雌、雄株叶片的可溶性氮化物含量差异不大。香榧叶片中的酚类化合物的含量一般有9个组分,雌、雄株在不同组分含量上存在明显差异。在未分化性别的幼树和幼苗中也存在类似雌、雄株的酚类化合物的组分图谱。可以利用酚类化合物组分图谱,结合可溶性糖含量作为鉴别香榧雌、雄株性别差异的生化指标。

Experiments of nutriculture were conducted to determine the optimum constituents and nitrogenous concentration of nutrient solution for two varieties of pak-choiIt was shown that optimum nitrogenous concentration were 8me/l and 8—12me/l for the young seedlings of "Dwarf hybrid Nol" and "Dwarf hybrid No2" respectively. The former was a variety with early harvesting and heat tolerance while the latter was a variety with middle harvesting. During middle vegetative growth period, both varieties preferred...

Experiments of nutriculture were conducted to determine the optimum constituents and nitrogenous concentration of nutrient solution for two varieties of pak-choiIt was shown that optimum nitrogenous concentration were 8me/l and 8—12me/l for the young seedlings of "Dwarf hybrid Nol" and "Dwarf hybrid No2" respectively. The former was a variety with early harvesting and heat tolerance while the latter was a variety with middle harvesting. During middle vegetative growth period, both varieties preferred to 12me/lrather than other concentrations.Absorbing proportions of N, P and K were 8:3.5:5.8 and 12:4:6.6 during early seedling and middle vegetative growth period respectively.It was found that the nitrate amount absorbed by seedling increased with the increase in NO_3-N concentration of nutrient solutiou and with the time of the experiment, n/w increased rapidly when NO_3-N concentration of nutrient solution was higher than 12me/l.The experimental results indicate that absorbing water amount were 30—35ml/day-seedling~(-1) and 110—120ml/dayseedling~(-1) during early seedling period and middle vegetative growth period respectively. Maximum absorbing water amount was 190ml/day-seedling~(-1) when the fresh weight of each seedling was higher than 200g.

以水耕法试验表明,不结球白菜营养液的氮素浓度因不同品种及生育期而异。苗期,早熟耐热的“矮杂一号”,最适的氮素浓度为8me/1,而中熟耐寒的“矮杂二号”则为8—12me/1。生长盛期,两品种均以12me/1为最适。营养元素吸收比例也随生育期的不同而变化:苗期的N:P:K为8:3.5:5.8;生长期为12:4:6.6。植株对硝态氮的吸收浓度(n/w)随溶液中硝态氮浓度的增加而增加。单株日平均耗水量:苗期为30—35ml;生长期为110—120ml;当单株重达200克左右时最大值可达190ml。

 
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