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temperature and light    
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  温光
    A Study On Relationship Between Countermoving and Occering of Phytophthora Copsici of Sweet Pepper and Factors of Temperature and Light
    温光因子与甜椒疫霉病的发生及对策研究
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  温度和光照
    Influence of Temperature And Light Length for Growing of Tetranychus Truncatus Ehara
    温度和光照长度对截形叶螨生长发育的影响
短句来源
    Effect of Temperature and Light Length on Breed of Tetranychus truncatus Ehara
    温度和光照长度对截形叶螨繁殖的影响
短句来源
    Effect of Temperature and Light Length on Growing ofMale_ Tetrangchus Truncatus Ehara
    温度和光照长度对雄性截形叶螨生长发育的影响
短句来源
    Effect of temperature and light time on the laboratory populatoin development of Tetranychus truncatus Ehara
    温度和光照对截形叶螨实验种群生长发育的影响
短句来源
    Effect of Temperature and Light on Growth of Monochamus alternatus
    温度和光照对松褐天牛生长的影响
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  温度与光照
    Influence of Temperature and Light on the Spore Production of the Entomophthoralean Fungus Pandora neoaphidis Humber
    温度与光照对新蚜虫疠霉产孢格局的影响
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    Moreover, rainwater, the sources of backfill, temperature and light are all main factors impacting on growth and decline of the weeds.
    雨水、回填土来源、温度与光照是影响杂草消长的主要因子。
短句来源
  温度及光照
    Under different temperature and light conditions,the colony growth and sporulation of Gloeosprium piperatum isolated from pepper were studied on PDA medium.
    通过温度及光照处理,研究了辣椒炭疽菌(Gloeosprium piperatum)在PDA培养基上的最佳产孢条件。
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  temperature and light
A leading role of neuropeptides and their effects on the developmental rate and morphogenetic variation under the influence of temperature and light factors are suggested.
      
The effect of pretreatment temperature and light intensity on recovery of the photosynthetic apparatus and its resistance to photostress and repeated heat shock is examined.
      
By comparing the parameters of temperature and light conditions where fruits grow with the GSH contents in them, the mutual relationship was disclosed.
      
Responses to temperature and light significantly regulated behaviour in the field.
      
The influence of temperature and light regime on the feeding intensity of Tetranychus urticae (Koch) (Acari: Tetranychidae) was studied on bean plants.
      
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A total of 10068 uredial samples of Puccinia graminis var. tritici were collected and identified during 1959—1965 and 1973—1985 in China. The identification was performed in greenhouse under temperatures of 18—25℃. Later, part of the uredial samples were identified by detached-leaf method under constant temperature and light. Stakman's international standard hosts were used throughout the identi- fication. But, it should be pointed out that among the standard varieties, only Marquis, Reliance, Kubanka,...

A total of 10068 uredial samples of Puccinia graminis var. tritici were collected and identified during 1959—1965 and 1973—1985 in China. The identification was performed in greenhouse under temperatures of 18—25℃. Later, part of the uredial samples were identified by detached-leaf method under constant temperature and light. Stakman's international standard hosts were used throughout the identi- fication. But, it should be pointed out that among the standard varieties, only Marquis, Reliance, Kubanka, Vernal, Khapli and Einkorn had the dif- ferentiating function for the racial group in China. For this reason, five supplementary hosts, viz, Mianzi No52, Huadong No 6, Minn. 2761, Orofen and Rulofen had to be added to differentiate the races within the group. Later on, sets of Sr-genes were also used. The results likewise indicated that most of the Sr-genes had on differentiating function, only Sr 9e and Sr Tt 1 could act as differentiating hosts. From the results of 20-year identification of 10068 uredial samples, it was found that these samples comprised 16 races. They were 17, 19, 21, 21C1, 21C2, 21C3, 34, 34C1, 34C2, 34C3, 34C4, 40, 116, 194, 207 and Race kota type 1. Among the 16 races, the race 21 group was a dominant one and the race 34 group ranked second. Their prevalent frequancies were 87.1 and 11.8 in percentage, respectively. It should also be pointed out that the race 21C3, which appeared in 1963, continued to increase and became a dominant race in 13 years from 1973—1985. We are glad to point out that the race 34 group also gradually increased, especially those samples coming from resistant varieties. Although the freqancies of occurence of races 34C2, 34C4 and 40 were low, they were very virulent to the present cultivars. Wheat breeders and plant pathologists should be careful with these races. The shift of races, especially the virulent races, probably not only depends on the resistant varieties, but also on interaction between races. Races 21C3, 34C2, 34C4 and 116, the four major prevalent races in China, were found virulent to seedlings with Sr genes 7a, 7b, 8, 9a, 12, 14, 17, 23, and 29, but avirulent to those with Sr genes 11, 15, 21, 22, 24, 26, 27, Tmp and Tt-2.

1959~1965、1973~1985年的二十年间。在全国范围内先后共鉴定10068份小麦秆锈菌的夏孢子堆标样,鉴定出我国小麦秆锈菌生理小种:17、19、21、21C1、21C2、21C3、34、34C1、34C2、34C3、34C4、40、116、194、207和柯太1型等十六个小种。除了17、21、34、40和116五个小种之外,其余十一个小种都是近二十年当中发现的。在这十六个在锈菌小种中,21号和34号两个小种群是主要流行小种群。21号小种群是优势小种群、其次为34号小种群,其出现频率分别为87.1F、11.8%、其它各小种只占1.1%。从1963~1965、1973~1985年间,21号小种的出现次数明显地在递减;而21C3小种自1963年发现以来,直到1985年,一直处于逐年增加的状况;21C2、21C1则呈下降的趋势或出现频率始终不高。在流行的年份或地区里34号小种群有明显上升的现象;特别是近几年,在抗病品种上所分离到的小种,多为34号小种群内的各小种。40号小种出现的频率很低,七十年代以来只有1983年于云南省红河州农科所发现一次。116号小种自1982年发现以来,出现频率一直很低。生理小种34...

1959~1965、1973~1985年的二十年间。在全国范围内先后共鉴定10068份小麦秆锈菌的夏孢子堆标样,鉴定出我国小麦秆锈菌生理小种:17、19、21、21C1、21C2、21C3、34、34C1、34C2、34C3、34C4、40、116、194、207和柯太1型等十六个小种。除了17、21、34、40和116五个小种之外,其余十一个小种都是近二十年当中发现的。在这十六个在锈菌小种中,21号和34号两个小种群是主要流行小种群。21号小种群是优势小种群、其次为34号小种群,其出现频率分别为87.1F、11.8%、其它各小种只占1.1%。从1963~1965、1973~1985年间,21号小种的出现次数明显地在递减;而21C3小种自1963年发现以来,直到1985年,一直处于逐年增加的状况;21C2、21C1则呈下降的趋势或出现频率始终不高。在流行的年份或地区里34号小种群有明显上升的现象;特别是近几年,在抗病品种上所分离到的小种,多为34号小种群内的各小种。40号小种出现的频率很低,七十年代以来只有1983年于云南省红河州农科所发现一次。116号小种自1982年发现以来,出现频率一直很低。生理小种34C2、34C4、40和 116虽各年出现频率很低,但对我国大多数生产品种或抗源材料有很强的致病力,所以对这四个小种的消长动态,尤其是北方春麦区和云南的德宏、红河和文山各州,特别需要注意。当前作为鉴别我国秆锈菌小种有效鉴别寄主有十个品种,其中包括国际鉴别寄主中的马阔斯(Marquis)、履浪斯(Reliance)、库班卡(Kubanka)、浮纳尔(Vernal)、爱因亢(Einkorn)等五个品种和五个辅助鉴别寄主:免字52、华东六号、明尼2761、欧柔(Orofen)、和如罗(Rulofen),以及应用对我国现行各小种都具有抗性的品种和Sr单基因系来侦察新致病类型的出现。我国小麦秆锈菌主要流行小种对Sr单基因品系:Sr7a、7b、8、9a、12、14、17、23和29是有毒的;而对Sr11、15、21、22、24、26、27 TmP和Tt—2是无毒的。本文还对当前抗源的布局和如何控制在锈病的流行,作了简短讨论。

Some aspects of biology and ecology of three dominant Stethorus species were studied. The results indicated that the adult stage was two times longer than that of the young stages. The predators preferred to prey on nymph and adult mite when all stages of the citrus red mite were exposed. They cannibalized and killed each other between species when prey was absent. The functional responses of the three Stethorus to citrus red mites were all of Holling's type Ⅱ. The searching efficiencies, however, were different...

Some aspects of biology and ecology of three dominant Stethorus species were studied. The results indicated that the adult stage was two times longer than that of the young stages. The predators preferred to prey on nymph and adult mite when all stages of the citrus red mite were exposed. They cannibalized and killed each other between species when prey was absent. The functional responses of the three Stethorus to citrus red mites were all of Holling's type Ⅱ. The searching efficiencies, however, were different between species and between stages of the same species. They were also different in different temperature and light conditions.

本文研究了四川3种主要食螨瓢虫的生物学及生态学特性。结果表明,这些食螨瓢虫的成虫期很长,是幼虫期的2倍以上;其对若螨和成螨有明显的选择作用;在没有猎物时,则发生种内及种间残杀。3种食螨瓢虫桔全爪螨的功能反应均为Holling Ⅱ型,但其搜索能力因不同种类、不同虫期而异。本文还探讨了温度和光照对食螨瓢虫搜索能力的影响。

The formation and germination rates of sporangia of Peronospora parasitica, pathogen of downy mildew on Chinese cabbage plants, are closely related to temperature and light. The optimum temperatures for formation and germination of sporangia are 15—20℃ Dark will help to favor abundant and rapid sporangium production, while light can stimulate germination of sporangium If temperature and humidity are favorable,sporangia will be released all the day from diseased plants in the field and...

The formation and germination rates of sporangia of Peronospora parasitica, pathogen of downy mildew on Chinese cabbage plants, are closely related to temperature and light. The optimum temperatures for formation and germination of sporangia are 15—20℃ Dark will help to favor abundant and rapid sporangium production, while light can stimulate germination of sporangium If temperature and humidity are favorable,sporangia will be released all the day from diseased plants in the field and then float in the air. The sporangia released in the morning are 3 times as much as those released in the afternoon.

大白菜霜霉病的病原——寄生霜霉(Peronospora parasitica pers.Fr.)孢子囊产生、萌发的速度与温、光密切相关。15—20℃最有利于孢子囊的产生及萌发。在黑暗条件下产孢数量多而且速度快,光照对孢子囊的萌发也有促进作用。在温湿度适宜的条件下,田间罹病植株可全日释放孢子囊,并浮动于大气中,一日内上午孢子囊释放量是下午的3倍。

 
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