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nitrogenous
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    Influence of Nitrogen Control on the Key Enzymes of Sugar Beet(Beta vulgaris.L)Nitrogenous Assimilation and Sugar Metabolism
    调控对甜菜(Beta Vulgaris.L)同化和蔗糖代谢关键酶的影响
短句来源
    USING ~(15)N AS TRACER FOR STUDYING THE RATE OF UTILIZATION OF NITROGENOUS FERTILIZER AND SOIL NITROGEN
    应用~(15)N对提高肥利用率与土壤值的研究
短句来源
    A DIAGNOSIS OF NITROGEN NUTRITION IN COTTON PLANTS--THE RELATIONSHIP BETWEEN THE AMINO--NITROGEN AND THE LEVEL OF NITROGENOUS NUTRITION IN COTTON LEAVES
    棉花素营养诊断——棉花叶片氨基态素营养水平的关系
短句来源
    Effects of Nitrogenous, Phosphorous and Potassium Fertilizers on Kernel Yield and Developmental Level of Root Rod Disease in Pea
    、磷、钾肥对豌豆籽粒产量及根腐病发病程度的影响
短句来源
    STUDY ON THE TRANSPORT CHARACTERISTICS OF NITROGENOUS COMPOUNDS IN THE XYLEM SAP OF SOYBEAN PLANT
    大豆植株木质部汁液中素运输特征的研究
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  氮肥
    USING ~(15)N AS TRACER FOR STUDYING THE RATE OF UTILIZATION OF NITROGENOUS FERTILIZER AND SOIL NITROGEN
    应用~(15)N对提高氮肥利用率与土壤氮值的研究
短句来源
    Quantitutive Effects of Sowing Time, Density and Nitrogenous Fertilizer on Wheat Powdery Mildew
    播期、密度和氮肥对小麦白粉病定量效应的研究
短句来源
    The results indicated that the chlorophyll content in leaves increased as supplement nitrogenous application at tillering stage,jointing stage and booting stage than no supplement nitrogenous application with 125.00%,70.83% and 52.08%,respectively.
    结果表明,在分蘖期、拔节期、孕穗期追施氮肥较对照(不追施处理)叶片叶绿素含量分别增加125%、70.83%和52.08%;
短句来源
    Effect of Regulating Nitrogenous Fertilizer on Wheat Population and Production Earnings
    小麦氮肥调控的群体效应和效益研究
短句来源
    The Effect of Nitrogenous Fertilizer on the Rate Photosynthesis of Later Period of Wheat Leaves
    不同氮肥水平对小麦后期叶片光合速率的影响
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  “nitrogenous”译为未确定词的双语例句
    The highest gluten content of wheat in the experiment reached up to 25.97%,the most suitable density was 1 500 thousand plants·hm-2,the best amounts of nitrogenous fertilizer was 75kg·hm-2,the best amounts of phosphate fertilizer was 56.25kg·hm-2,the best amounts of potassium fertilizer was 37.5kg·hm-2,and no zinc fertilizer was applied.
    hm-2、施钾量为37.5kg. hm-2、不施用锌肥,小麦面筋含量可达25.97%。
短句来源
    The malondialdehyde(MDA) content and the relative conductivity in spring wheat leaves decreased,MDA was 16.26% and 15.02% lower,the relative conductivity was 5.65 and 3.62 percentage points lower than no supplement nitrogenous application.
    而叶片MDA含量和电导率在拔节期和孕穗期均呈下降趋势,较对照叶片MDA含量分别降低16.26%和15.02%,电导率分别降低5.65和3.62个百分点。
短句来源
    Excretion of nitrogenous compounds by the root system of peanut intercropping with rice at different growth stages
    水稻与花生混作系统作物根系分泌氮的特性
短句来源
    for the medium-yield fields, the corresponding numbers are 120 kg/hm2 of P2O5, 177. 85 - 192. 92kg/hm2 of pure nitrogenous fertilizer, and 110. 84~131. 95kg/hm2 of K2O .
    中产田在底施P_2O_5120kg/hm~2的基础上,施纯N177.85~192.92kg/hm~2,K_2O110.84~131.95kg/hm~2,其中70%底施,30%于返青至拔节期施入。
短句来源
    The quantity of nitrogenous fertilizer applied in cotton fields varied in a range of 426~430 kg·hm -2 in both counties, which was much higher than that recommended, the proportion of farmer households excessively applying nitrogenous fertilizer was in a range of 39%~73%, but the quantity was less than the recommended one in 6%~8% farmer households.
    策勒县和尉犁县平均施N总量达到426~430kg·hm-2,远超过推荐适宜施N量,过量施N农户占总农户的39%~73%,同时,仍有6%~8%的农户施N量低于推荐量;
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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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The present paper deals with the influence of the intensity and its persistence of nitrogen supply to the formation and development of the organs of rice plant and also with the resulting physiological feature of these influences. Pot culture experiments with paddy soils were conducted in open field. Organic manure and ammonium sulphate were applied at different stages of growth, i.e. tillering, internode elongating and panicle differentiating stage. The results are summarized as follows:1. Experiments revealed...

The present paper deals with the influence of the intensity and its persistence of nitrogen supply to the formation and development of the organs of rice plant and also with the resulting physiological feature of these influences. Pot culture experiments with paddy soils were conducted in open field. Organic manure and ammonium sulphate were applied at different stages of growth, i.e. tillering, internode elongating and panicle differentiating stage. The results are summarized as follows:1. Experiments revealed that various organs of rice plant gave different responses to the status of nitrogen supply, and to the same organs, their responses of nitrogen varies at different stages of growth. At the tillering stage, a strongly intensified and less persistent supply of nitrogen, as in the case of ammonium sulphate, promoted the assimilation of dry matter in leaf blade, and consequently enlarged the leaf areas. Such an effect on the leaf blade, however, terminated after the internode elongating stage, and more accumulation of dry matter was found in the stems. Top dressing of manures, pertinently after the internode elongating stage, gave a moderate but persistent supply of nitrogen at that time and resulted the formation of large and healthy ears. Under theexperimental condition, such treatments have been proved favourable to the growth and yield of rice.2. The influence on the growth of the organs, as resulted by changing the status of nitrogen supply, is mainly induced by the rate of accumulation and translocation of nitrogen in plant. A strongly intensified, but less persistent, nitrogen supply accelerates the rate of translocation of nitrogenous materials, while a less intensified but rather persistent supply of nitrogen retains more nitrogenous materials in leaf blade.3. It is evidently that the demand of nitrogen supplying status of rice plant differs at different growing stages. Under the experimental condition, high yields of rice crops were attained by a slower but persistent rate of nitrogen suppy in the tillering stage; a faster but less persistent rate in the internode elongating stage and also a moderate but persistent rate in the penicle differentiating stage. Since property of soil nitrogen varies in different soil type, the regulation of nitrogen supplying status by fertilization should be different in cach cases.

1.晚稻植株的不同器官对氮素供应状况的反映不同,其中叶片較为敏銳。而同一器官在不同生育时期內影响也不一样谂柙缘奶跫?叶片在分蘖期中,氮素供应強度大、持續时間短比強度小、持續时間长的处理更能促进叶片干物貭累积,增大叶面积。而拔节期以后,影响不明显并略有相反趋势。对于茎稈則在供应強度大及其持續时間短的情况下,不論拔节期或分化期处理都明显地促进其干重的增加。穗粒的形成条件却是強度小而持續时間长的有利于每穗粒数的提高。但是,氮素供应状况的影响显著与否还可能受着基肥水平的制約,在高量基肥的条件下影响极不显著。2.土壤氮素供应状况影响器官生长的原因,初步看来是通过对植株体內氮素累积和运轉速度的影响而发生作用。由于不同生育时期內,叶、鞘、茎、穗本身的生长特点各异,所要求的物貭累积与运轉的強度也各不相同。因此,氮素供应状况对器官生长的影响也就不全相同。3.根据試驗結果,初步认为水稻对土壤氮素供应状况的要求是分蘗初期緩而长,拔节期快而短,穗分化期緩而长。因此,結合不同土壤的供肥特点需要利用有机厩肥或速效化肥等性貭不同的肥料在次数及用量上加以調节。4.初步认为施肥原則掌握的主要內容是根据水稻器官协調生长的需要以調节土壤的氮素...

1.晚稻植株的不同器官对氮素供应状况的反映不同,其中叶片較为敏銳。而同一器官在不同生育时期內影响也不一样谂柙缘奶跫?叶片在分蘖期中,氮素供应強度大、持續时間短比強度小、持續时間长的处理更能促进叶片干物貭累积,增大叶面积。而拔节期以后,影响不明显并略有相反趋势。对于茎稈則在供应強度大及其持續时間短的情况下,不論拔节期或分化期处理都明显地促进其干重的增加。穗粒的形成条件却是強度小而持續时間长的有利于每穗粒数的提高。但是,氮素供应状况的影响显著与否还可能受着基肥水平的制約,在高量基肥的条件下影响极不显著。2.土壤氮素供应状况影响器官生长的原因,初步看来是通过对植株体內氮素累积和运轉速度的影响而发生作用。由于不同生育时期內,叶、鞘、茎、穗本身的生长特点各异,所要求的物貭累积与运轉的強度也各不相同。因此,氮素供应状况对器官生长的影响也就不全相同。3.根据試驗結果,初步认为水稻对土壤氮素供应状况的要求是分蘗初期緩而长,拔节期快而短,穗分化期緩而长。因此,結合不同土壤的供肥特点需要利用有机厩肥或速效化肥等性貭不同的肥料在次数及用量上加以調节。4.初步认为施肥原則掌握的主要內容是根据水稻器官协調生长的需要以調节土壤的氮素供应強度及其持續时間,造成最和諧与最有效的土壤——植物供求关系。

This report concerns on an inoculative effects of several nitrogen-fixing bacteria isolated and screened from the rice roots in several years of inoculation experiments to the corresponding varieties of rice. With specially designed experiment, we employed nitrogen instead of the usual nitrogen free cultivation in the previous treament of crops. The pots of soils were supplied with essential nitrogenous fertilizers. The rice plants grew well with plenty of root secretion. So these well satisfied nitrogen...

This report concerns on an inoculative effects of several nitrogen-fixing bacteria isolated and screened from the rice roots in several years of inoculation experiments to the corresponding varieties of rice. With specially designed experiment, we employed nitrogen instead of the usual nitrogen free cultivation in the previous treament of crops. The pots of soils were supplied with essential nitrogenous fertilizers. The rice plants grew well with plenty of root secretion. So these well satisfied nitrogen fixing organisms grew well and fixed the nitrogen efficiently. Preliminary results show that the pot experiments exhibited the following points. 1. Rice roots at the milking stage were found to have greater numbers of nitrogen-fixing bacterial counts and higher nitrogenase activities, indicating evident rhizosphere effects. When these microorganisms were inoculated to the different growing stages of corresponding varieties of rice, their activities not only concentrated on the surface of rice roots,but also penetrated into the inner parts of the roots, while such pheriomena were not found in the soil of checked pot experiment. Inoculation at the flowering or booting stages resulted in marked effect in comparison with other stages, Nitrogenase activities of roots at the tillering stage of the rice plant was the highest compared with all other different inoculative stages, next ranked the flowering stage, while seedling stage showed the lowest. The number of nitrogen fixing bacterial counts and nitrogenase activities at the yellow maturity stage of the crop was much less than that of the milking stage. 2. Inoculation of the corresponding strains of the three rice varieties showed that the numbers of nitrogen-fixing bacteria counted over 15-30 times than that of none inoculated roots. The bacteria also gathered on the rice rhizosphere. 3. Another experiment on two better isolated strains were inoculated to different varieties of rice The adaptability of strain 243~1_(3) was broader than the other strains. Among the five treatments, four of them gave increased rice yield. The increase in comparison with checked, none inoculated experiments ranged from 6% to 22.9%. But one strain did not show increase rice yield.

本文报道几年来分离筛选的一些固氮菌株在相应的水稻品种上的接种效应。在设置试验中改变了一般采用的缺氮试验方法,供给水稻生长以适当的氮素营养,使其根分泌物增多,借以作为根系固氮微生物生长和固氮的营养料。盆栽试验结果初步表明:1.经灌浆期测定,接种于水稻相应品种各个生育期的土壤中,接种菌都有明显的根际效应,都能群集于水稻根系的表面,有些甚至进入根内。扬花期及孕穗期接种的群集现象最显著,其它时期接种的较差;而固氮酶活性则分蘖期最高,其次为扬花期,苗期最低,但土壤中检测不到接种菌及固氮酶活性。黄熟期测定的菌数和固氮酶活性都比灌浆期测定的低,而且土壤中也可检测到少量固氮菌和固氮酶活性。2.三个水稻品种接种相应的分离菌,其根际效应也很明显,同样能大量群集于根表。接种的根表菌数比不接种的高15~30倍以上。3.两个有效菌株接种不同水稻品种对产量影响的盆栽试验表明,菌株243(?)适应性较广,在接种的五个品种中四个表现增产,其幅度为6~22.9%,而一菌株则不明显。

Application of nitrogenous fertilizer to early rice at the ear primordia stage under the triple-cropping system was studied. The results showed that there was little difference in the yield of rice or its economic properties between the fertilized and the control plot. Application of fertilizer in the late stage of growth under bad weather even showed some tendency toward a decrease in yield.Hence, under normal conditions, it might be better to adopt the traditional early concentrated way of fertilization...

Application of nitrogenous fertilizer to early rice at the ear primordia stage under the triple-cropping system was studied. The results showed that there was little difference in the yield of rice or its economic properties between the fertilized and the control plot. Application of fertilizer in the late stage of growth under bad weather even showed some tendency toward a decrease in yield.Hence, under normal conditions, it might be better to adopt the traditional early concentrated way of fertilization for the early rice under the triple-cropping system, that is, to apply adequate base manure, and to apply ample manure early to the tillering plant, but no manure at the earing stage.

对三熟制早稻用氮素化肥作穗肥进行了研究。结果表明:不论何时施用穗肥,其产量与不施稳肥的比较,无明显不同;在生育后期天气不利时,还有减产趋势;考察主要经济性状,也无明显差异。因此,在通常育秧栽培情况下,三熟制早稻采用传统的集中前期施肥法,即施足基肥,早施足量分蘖肥,一般不施穗肥,必要时施用适量穗肥保花,是适合生产实际的。

 
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