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seed     
相关语句
  种子
     Study on the Mechanism and Equipment of Dielectric Seed Separation
     介电式种子分选机理及其设备的研究
短句来源
     Analytical Study of Sesame (Sesamum Indicum L.) Germplasm Seed, Biochemical and Molecular Markers
     芝麻种质资源种子特性、生化和分子标记的分析研究
短句来源
     Study on Physiology of Seed Dormancy and Identification Techniqueof Protein RP-HPLC Biochemistry Marker of Rhodiola.L.
     红景天种子休眠生理与蛋白质HPLC生化标记鉴定技术的研究
短句来源
     Study on Seed Transmission of Sugarcane Mosaic Virus in Corn
     玉米种子传播甘蔗花叶病毒的研究
短句来源
     Study on the Propagating Characters and Seed Production Technology of Zoysia Japonica
     结缕草繁殖特性及其种子生产技术的研究
短句来源
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     Study on Process and Models for Extraction of Edible and Medicinal Ingredients with Supercritical Carbon Dioxide from Grape Seed
     超临界二氧化碳萃取葡萄中食用及药用成分的工艺和模型研究
短句来源
     Effect of ~(125)Ⅰ Seed Interstitial Implant on Tumor Inhibition and Development of a Treatment Planning System for Tumor Therapy
     ~(125)Ⅰ源组织间植入的抑瘤效果和治疗计划系统研究
短句来源
     Study on α-linolenic Acid Enrichment & Microencapsulation Technology of Kiwifruits Seed Oil
     猕猴桃油α-亚麻酸的富集及猕猴桃油微胶囊化技术研究
短句来源
     Studies on Separation & Purification, Identification of the Proanthocyanidins in Grape Seed Extract, and Their Antioxidation
     葡萄原花青素分离提纯、组分鉴定及抗氧化性研究
短句来源
     Study on the Protective Effects and Mechanisms of Grape Seed Procyanidins on Cerebral Ischemia-Reperfusion Injury in Mice
     葡萄原花青素对小鼠脑缺血再灌注损伤的保护作用及机制研究
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     Studies on the Conservation, Physiological and Biochemical Mechanism and Genetic Stability in Ultra-Dry Seed of Several Crops
     几农作物超干子保存、生理生化机理和遗传稳定性研究
短句来源
     Coupling Effects of Water and Fertilizer on Seed Yield and the Yield Performance of 6 Grasses Species
     水肥耦合对6禾本科牧草子产量和生产性能的效应
短句来源
     Construction of the Method of Estimating the Marketization of Seed Industry System and Empirical Study in China
     我国业体系市场化水平测度方法构建及实证研究
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     A Study on the Integration of China's Seed Industry
     中国业整合研究
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     Analyses on the Current Status of Seed Purity in Main Grain and Oil Crop Hybrids in Sichuan Province and Studies on the Management Countermeasures
     四川粮油作物杂交质量现状分析及管理对策研究
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  晶种
     The optimum hydro-thermal synthetic conditions are:the molar ratios used are M_2O /SiO_2= 1.50, H_2O/M_2O= 40.0,the synthetic time is 8 hours,and the volume of crystal seed is 9.0%.
     优化的水热合成条件为M2O/SiO2(mol)=1.50,H2O/M2O(mol)=40.0,合成时间为8h,晶种加入量为9.0%。
短句来源
     Effect of additive on Al(OH)_3 and Al_2O_3 made by seed precipitation from sodium aluminate solution
     添加剂对铝酸钠溶液晶种分解产生Al(OH)_3和Al_2O_3的影响
短句来源
     The results show that adding 3% AlF_3+1% nano α-Al_2O_3 crystal seed or 1% ZnF_2+1% nano α-Al_2O_3 crystal seed decreases the phase transition temperature,and α-Al_2O_3 nanopowder with grain size of 37 nm or 32 nm are obtained after firing at 950 ℃ for 1 h.
     结果表明:向Al(OH)3粉料中加入1%ZnF2+1%晶种或3%AlF3+1%晶种,降低了相变温度,从而在950℃煅烧1h后即可得到晶粒度分别为32nm和37nm的α-Al2O3纳米粉。
短句来源
     After optimization it has been made clear that the optimum conditions for SDD preparation should be: synthetic temperature 25~35℃,NaOH/CS_2 molar ratio 1.02,seed crystal consumption 1%,initial temperature for adding crystalseed:40~50℃,and stirring frequency for crystallization 10~15Hz.
     经过优化和综合实验确定了制备SDD的最佳工艺条件:合成温度为25~35℃,NaOH/CS2摩尔比为1.02、加入晶种的初始温度为40~50℃、晶种用量为1%、结晶搅拌频率为10~15Hz。
短句来源
     In this paper,the catalysts for the reaction system SiO_2-C-N_2 were studied,in-eluding the effect of temperature (1250-1450℃),time (5-30 h),atmosphere (N_2 orN_2+H_2),and crystalline seed on the nitridation.
     本文对 SiO_2-C-N_2反应体系进行了催化剂的探索,研究了温度(1250~1450℃)、时间(5~30h)、气氛(N_2或 N_2+H_2)和晶种等因素对氮化结果的影响。
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      seed
    Fitness analysis of seed and vegetative reproduction of clonal tree Symplocos laurina
          
    A bottleneck in sexual propagation appeared at the stage from seed to seedling, while in clonal propagation it appeared during the period from an asexual plantlet to a ramet.
          
    Based on the growth, wood property of the ortets, and rooting abilities of cuttings, 32 Pinus massoniana clones for pulp use were selected from forests of superior provenance, mixed families, and progeny test of seed orchard by two-step selection.
          
    Altitudinal patterns of the flora of seed plants of Dawei Mountain in Yunnan Province, south China
          
    Meanwhile, further investigations have also been made to the flora of Dawei Mountain, which has been accounted for in the literature, as Flora Yunnan, The Seed Plant in Yunnan, and so on.
          
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    In order to determine the practical value of the Bordeaux mixture as acontrol measure for the cotton leafhopper, a field experiment was designedand carried out in 1943 at Shatang, Liuchow, Kwangsi. Three known effective contact poisons, namely, a water suspension ofYam bean seed power (Gross Smith value 1%) (1:1000), a water suspension ofpyrethrum powder (1:600), and a water extract of tobacco (Nicotine content2.35%) (1:100) were applied at the same time with two types of Bordeauxmixture (4-6-50 and 2-4-50)...

    In order to determine the practical value of the Bordeaux mixture as acontrol measure for the cotton leafhopper, a field experiment was designedand carried out in 1943 at Shatang, Liuchow, Kwangsi. Three known effective contact poisons, namely, a water suspension ofYam bean seed power (Gross Smith value 1%) (1:1000), a water suspension ofpyrethrum powder (1:600), and a water extract of tobacco (Nicotine content2.35%) (1:100) were applied at the same time with two types of Bordeauxmixture (4-6-50 and 2-4-50) for four applications at a fifteen-day intervalduring the early growth season of cotton from June 15 to July 30. The popula-tion of leafhopper, the degree of infestation, the number of green bolls andthe yield of lint cotton were statistically analyzed and discussed. Population observations showed that the three contact poisons greatlyreduced the leafhopper population on the first day after application. Butthey soon lost their effectiveness three days later, so that the population startedto rebuild up and was practically with no significant difference from that ofhe untreated plots at the end of the fifteen-day interval. While the Bordeaux mixture showed a maximum reduction of population on the third day afterapplication, and maintained its effectiveness for a considerable time; the pop-ulation was constantly checked to such an extent that no serious damage wouldoccur during the spray interval. The degree of infestation as indicated by the symptom of cyrtosis onleaves was 40.83, 47.21, 55.85, 57.66, 62.48, and 60.39 per cent in average for4-6-50 Bordeaux mixture, 2-4-50 Bordeaux mixture, yam bean seed powdersuspension, pyrethrum powder suspension and tobacco water extract and theuntreated check plots respectively. Moreover, the percentage of heavily in-fested plants for the treated and untreated plots in the fore-mentioned orderwas 5.61, 8.24, 21.88, 23.68, 28.88 and 25.27 respectively.It was evident thatin the long run the Bordeaux mixture was the most effective insecticide inreducing the degree of infestation. The number of bolls per plant was 15.27, 13.24, 10.17, 9.53, 8.75 and6.75 in average, and the yield of lint cotton was 19.50, 17.84, 11.69, 10.11and 6.24 catties per mou (1 catty=0.5 kilogram, 1 mou=0.164 acre) for thetwo types of Bordeaux mixture and three kinds of contact poisons and theuntreated check plots respectively. The yield of cotton was generally much lower in 1943 than in 1942 forthe same experimental field. This was apparently due to the poorer soilfertility and heavier leafhopper infestation in 1943. But the ratio of the yieldbetween the Bordeaux mixture treated plots and the check plots was quitedifferent in the two years, i.e. 55.62 to 31 catties per mou in 1942, and 19.50to 6.24 catties per mou in 1943. This revealed a fact that the Bordeauxmixture treatment will he applied more effectively and profitably where thecotton field is not fertile and when the leafhopper outbreak is severe. 4-6-50 Bordeaux mixture and 2-4-50 Bordeaux mixture were in all casesinsignificantly different in their effectiveness. Theiefore a 2-4-50 Bordeauxmixture would be a more economical and practical measure for the cottonleafhopper control.

    (一)本试验应用三种防治棉浮(鹿土)子之有效接触剂,烟草、除虫菊、及豆薯种子,与两种配合式之波尔多液;4—6—50式及2—4—50式,同时在棉田内每半月施用一次,自六月半至七月底共施用四次。比较其消减虫口,减轻受害程度及增加产量诸功能,藉以证明波尔多液之特性。 (二)1000倍豆薯种子粉悬液、600倍除虫菊粉悬液、及100倍烟草水,三者不论在消减虫口,减轻受害程度,以及增加产量各方面,其功能均相若,无显著差异。 (三)4—6—50式波尔多液与2—4—50式波尔多液,对于治虫、减害及增产各功能,亦无显著差异。 (四)豆薯种子粉悬液、除虫菊粉悬液、及烟草水三种接触剂经施用后一天之治虫效力,均显较波尔多液为优,惟至第三天,差异便不显著,三天以后,波尔多液之功效反日见优越。此显示波尔多液之持久特性。 (五)棉浮(鹿土)子之虫口发生愈多,则波尔多液之功效愈著。因其效力持久,所抑制之虫口可还较接触剂为低。 (六)波尔多液减轻棉叶之受害程度,因其药效持久,附属牢固,保护力强,故亦较三种接触剂为优。 (七)施用波尔多液后,结铃数显然增加。其功效亦优于三种接触剂。 (八)施用波尔多液后,每亩皮棉产量亦显著增加。本年结果,施用4...

    (一)本试验应用三种防治棉浮(鹿土)子之有效接触剂,烟草、除虫菊、及豆薯种子,与两种配合式之波尔多液;4—6—50式及2—4—50式,同时在棉田内每半月施用一次,自六月半至七月底共施用四次。比较其消减虫口,减轻受害程度及增加产量诸功能,藉以证明波尔多液之特性。 (二)1000倍豆薯种子粉悬液、600倍除虫菊粉悬液、及100倍烟草水,三者不论在消减虫口,减轻受害程度,以及增加产量各方面,其功能均相若,无显著差异。 (三)4—6—50式波尔多液与2—4—50式波尔多液,对于治虫、减害及增产各功能,亦无显著差异。 (四)豆薯种子粉悬液、除虫菊粉悬液、及烟草水三种接触剂经施用后一天之治虫效力,均显较波尔多液为优,惟至第三天,差异便不显著,三天以后,波尔多液之功效反日见优越。此显示波尔多液之持久特性。 (五)棉浮(鹿土)子之虫口发生愈多,则波尔多液之功效愈著。因其效力持久,所抑制之虫口可还较接触剂为低。 (六)波尔多液减轻棉叶之受害程度,因其药效持久,附属牢固,保护力强,故亦较三种接触剂为优。 (七)施用波尔多液后,结铃数显然增加。其功效亦优于三种接触剂。 (八)施用波尔多液后,每亩皮棉产量亦显著增加。本年结果,施用4—6—50式波尔多液者,产量较对照区增多3.12倍,2—4—50式波尔多液区较对照区增产2.85倍

    The injurious insects of cotton of this province, however, have not hithertobeen carefully studied, especially the pink bollworm, which annually reducesthe cotton production by 10 to 30 per cent. The present authors spent twoyears in observing the life history and habits of this insect, in attempting tofind some effective control measures. The result is herewith summarized :- 1. In the vicinity of Wu-chang, the pink bollworm has three generationsa year. The first generation occupies May and July. The second...

    The injurious insects of cotton of this province, however, have not hithertobeen carefully studied, especially the pink bollworm, which annually reducesthe cotton production by 10 to 30 per cent. The present authors spent twoyears in observing the life history and habits of this insect, in attempting tofind some effective control measures. The result is herewith summarized :- 1. In the vicinity of Wu-chang, the pink bollworm has three generationsa year. The first generation occupies May and July. The second one occursin mid-July and the last in late-August. Due to the lower temperature, theemergence of the first generation need about two months. 2. In day time, the adult is usually inactive, while in windless night,after seven o'clock, it becomes very active and lays eggs mostly on green bollsand calyx. about a week later, the eggs hatch and the newly-hatched larvaeare shortly getting into the bolls. After four days they often eat into theseeds. Ten days later, the lint is so stunted as to become dusky yellow incolor, thus both the yield and the quality of cotton are greatly lowered. Themature larvae appear about half a month after. 3. Field experiments have shown that three dustings of 10% DDT- sulfurpowder were very effective. In the severely damaged cotton area, the thirdspray may be simultaneously done with controlling the cotton leaf-hoppers andthe cotton leaf-rollers. 4. About 84% hibernating larvae in cotton seeds will come out when thecotton exposed in sun light and stored in the farmer's house. Hence it seemsadvisable to put cloth or other soft material covers on the cotton stored inorder to collect and kill the larvae under them. In addition, destruction of allremaining bolls on the cotton stalks, as early as possible in winter is important. 5. For controlling the bollworms in cotton store-houses, the followingresults have been obtained 50% wettable DDT diluted with 20 parts of water,91% of larvae were killed within 30 days; 6.5% 666 (benzene hexachloride)gave a mortality of 63% in four months. Wettable 6.5% 666 diluted withwater (1:100), has been proved to be the most effective ovicide which destroys99.4% of eggs while parathion (E605) also gave a very high mortality at97.7%. But 50% wettable DDT (1:100) Kills eggs at 64.2% and lead arsena-te only 16.2% respectively. 6. There were 39.1% overwintering larvae parasitized by parasitic mitesand wasps. Among them, most are the mite, Pediculoides ventricosus Newport,while the parasitic wasps Eurypterna arakawae Mats. less than 0.5%.

    红铃虫在南方棉区为害棉花相当严重,除去脱落蕾铃外,僵黄花率为10—30%,我们针对这个严重问题,进行了红铃虫生活史的观察研究与防治方法试验,写出初步结果,提供防治参考。 1.红铃虫在华中武昌棉区一年有三代。第一代羽化在5至6月,7月中旬为第二代;8月下旬为第三代;第一代的蛹和幼虫所需时期均较第二、三代长。 2.成虫白天不活动,夜晚7时以后无风天气活跃最盛,产卵以在青铃上及花萼上为最多。孵化后三十多分钟即钻入棉桃内为害,4天即侵入棉籽内取食,10天棉瓤纤维呈僵黄状,半月后幼虫即可老熟(第三代的)。 3.田间防治红铃虫以10%滴滴涕硫磺粉喷三次效果显著,在后期棉虫严重地区可结合防治叶跳虫卷叶虫等同时进行。 4.籽花内的幼虫在群众家里及晒花时逃出84%,因此指导群众将籽花堆上加覆盖物,再结合帘架晒花是消减过冬红铃虫最经济有效的办法。 4.防治仓库越冬红铃虫以50%可混性滴滴涕1:30倍水溶液杀虫效果最佳。30天内死亡率达91%.6.5%可混性666(1:20)死亡率为63%。但是1:100倍的水溶液杀卵效率高到99.4%。稀释万分之一的E605为97.7%。50%可混性滴滴涕1:100杀卵率为64.2%,砒酸铃最差...

    红铃虫在南方棉区为害棉花相当严重,除去脱落蕾铃外,僵黄花率为10—30%,我们针对这个严重问题,进行了红铃虫生活史的观察研究与防治方法试验,写出初步结果,提供防治参考。 1.红铃虫在华中武昌棉区一年有三代。第一代羽化在5至6月,7月中旬为第二代;8月下旬为第三代;第一代的蛹和幼虫所需时期均较第二、三代长。 2.成虫白天不活动,夜晚7时以后无风天气活跃最盛,产卵以在青铃上及花萼上为最多。孵化后三十多分钟即钻入棉桃内为害,4天即侵入棉籽内取食,10天棉瓤纤维呈僵黄状,半月后幼虫即可老熟(第三代的)。 3.田间防治红铃虫以10%滴滴涕硫磺粉喷三次效果显著,在后期棉虫严重地区可结合防治叶跳虫卷叶虫等同时进行。 4.籽花内的幼虫在群众家里及晒花时逃出84%,因此指导群众将籽花堆上加覆盖物,再结合帘架晒花是消减过冬红铃虫最经济有效的办法。 4.防治仓库越冬红铃虫以50%可混性滴滴涕1:30倍水溶液杀虫效果最佳。30天内死亡率达91%.6.5%可混性666(1:20)死亡率为63%。但是1:100倍的水溶液杀卵效率高到99.4%。稀释万分之一的E605为97.7%。50%可混性滴滴涕1:100杀卵率为64.2%,砒酸铃最差为16.2%。 6.越冬幼虫被寄生的平均有39.1%,发现天敌有二种,其中绝大多数是榖痒螨(Pediculoides ventricosus

    This report summarizes observations made on the performances of forty introduced guava seedling trees planted on the grounds of Fukien Agricultural College since the Spring of 1959. The seeds were received on December 10, 1947 from Dr. I. J. Condit, Citrus Experiment Station, Riverside, California, U. S. A. Among this collection of guava seedlings, four outstanding ones were selected for continued studies. These include: Fukien Agricul- tural College No. 3, for canning purposes, and Fukien Agricultural...

    This report summarizes observations made on the performances of forty introduced guava seedling trees planted on the grounds of Fukien Agricultural College since the Spring of 1959. The seeds were received on December 10, 1947 from Dr. I. J. Condit, Citrus Experiment Station, Riverside, California, U. S. A. Among this collection of guava seedlings, four outstanding ones were selected for continued studies. These include: Fukien Agricul- tural College No. 3, for canning purposes, and Fukien Agricultural College No. 9, No. 32 and No. 26 all for fresh fruits. Propagation was done readily by layering rootparts. Chinese air-layering using sphagnum moss as a rooting medium was also employed with success.

    本文是作者等三年来将美洲番石榴引种在福州试栽情况以及果实性状的报告。文中指出四株实生树即福农3号、福农9号、福农32号及福农36号等较为优良。福农3号适合为食品加工之用,其佘三号均适合为鲜果之用。

     
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