助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   weeds 在 生物学 分类中 的翻译结果: 查询用时:0.013秒
图标索引 在分类学科中查询
所有学科
生物学
植物保护
农作物
环境科学与资源利用
林业
园艺
畜牧与动物医学
农业基础科学
农艺学
更多类别查询

图标索引 历史查询
 

weeds
相关语句
  杂草
    Taxonomic Studies on Helminthosporium and Curvularia from China and a Survey of Mitosporic Fungal Pathogens of Main Weeds in North
    中国长蠕孢属和弯孢属的分类研究暨北方地区主要杂草丝孢菌病原调查
短句来源
    Molecular Identification of Geminiviruses Infecting Weeds in Yunnan
    云南杂草双生病毒的分子鉴定
短句来源
    Molecular Identification of Geminiviruses Infecting Weeds in Guangxi
    广西杂草双生病毒的分子鉴定
短句来源
    Molecular Identification of Geminiviruses Infecting Weeds in Hainan and Viral Pathogenicity
    海南杂草双生病毒的分子鉴定及病毒致病性研究
短句来源
    FORMATION OF WEEDS
    杂草的形成
短句来源
更多       
  “weeds”译为未确定词的双语例句
    The Study on Floristic Geographical Distribution of Five Poisonous Weeds in Northern Pastoral Area of China
    中国北方牧区五种毒草的植物区系地理分布研究
短句来源
    When Bufo gargarizans were exposed to the ghyphosate solutions in dilutions of 1.64, 2.05, 2.87ml/L, (which are the recommended concentrations for killing field weeds,) the reaction time, active potential peak value and impulse conduction velocity of the tested groups were all statistically different from those of the control group.
    草甘膦溶液浓度达到推荐农田使用浓度1.64~2.87ml/L时,各处理组蟾蜍的应激反应时间、动作电位幅度和冲动传导速度均与对照组差异极显著(P<0.01)。
短句来源
    Purification and Structure-Function Study of Novel α-Amylase Inhibitors from Wild Amaranth (Amaranthus Paniculatus) Weeds
    野生苋属植物籽实中新型α-淀粉酶抑制剂的分离纯化和结构与功能研究
短句来源
    For Alopecurus aequalis, Sclerochloa kengiana, Polypogon fugax etc. the germinability of the seeds of these weeds from the paddy field were 39.3%, 62.7% and 33.3% after 2 years, respectively;
    看麦娘、硬草、棒头草种子在水田内2年发芽率分别为39.3%,62.7%、33.3%,而在旱田内2年后死亡率达100.0%;
短句来源
    In order to make use of a harmful weeds, Eupatorium adenophorum Spreng.
    紫茎泽兰(Eupatorium adenophorum Spreng.)
短句来源
更多       
查询“weeds”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  weeds
canadensis including length, surface area, volume, and average diameter are greater than for composite exotic weeds.
      
Information on specific features of distribution and activity of introduced species growing feral and accidental weeds in different forest types is presented.
      
Cultivated plants and weeds in fields of the Penza Volga region in the middle ages
      
Geobotanical investigations demonstrated that the transformation of the species composition of herbs from weeds to predominantly meadow plants occurred in five-ten years after the soil was no more used for farming.
      
The algorithm separates the weed area from soil background according to the color eigenvalue, which is obtained by analyzing the color difference between the weeds and background in three color spaces RGB, rgb and HSI.
      
更多          


Aedes albopictus is one of the mosquitoes most often seen in Foochow, but itsecology is not entirely known. Therefore, I have spent a whole year in observing itsecology. The results of my observations are as follows: 1. Aedes albopictus is active in the day time. It is not easy to collect, but theyoften appear in the mosquito net, kitchen, pig sty, drawing-room and among weeds inthe fields. The seasonal distribution of Aedes albopictus covers a period from Marchto December with the highest peak in July,...

Aedes albopictus is one of the mosquitoes most often seen in Foochow, but itsecology is not entirely known. Therefore, I have spent a whole year in observing itsecology. The results of my observations are as follows: 1. Aedes albopictus is active in the day time. It is not easy to collect, but theyoften appear in the mosquito net, kitchen, pig sty, drawing-room and among weeds inthe fields. The seasonal distribution of Aedes albopictus covers a period from Marchto December with the highest peak in July, August and September. 2. The daily activity of adult Aedes albopictus show two peaks outdoors, one inthe morning at 5--6 o'clock, and one in the late afternoon at 4--5 o'clock. Indoors,only a single peak, at about 1--5 p.m. 3. The breeding places of the larvae are widely distributed, consisting of small re-ceptacles like vats, cans, urns, etc., with water which is always of a light brownish col-our and with rotten leaves and silt at the bottom. The pH values of the water oftypical breeding places is 6.5--7.6, and the total organic nitrogen is 6--20 p.p.m. 4. The larvae of Aedes albopictus are found in most cases to breed alone, and arerarely found together with those of other insects. 5. The egg of Aedes albopictus hibernate for two months and a half in wintertrom middle of December to end of February. 6. The importance of Aedes albopictus in the transmission of Japanese B encephalitis virus is discussed.

本文系1959—1960年作者在福州地区进行的白纹伊蚊一年生态观察报告,其主要结论有:(1)白纹伊蚊成虫的栖息场所很多,在人房帐内、厨房、猪栏、客厅、郊野草丛等处都有采获。其月份消长,自3月出现,7—9月为高峰,12月下旬消失。(2)成虫白昼活动时间在户外呈现两个峰,一个峰在上午5—6时,另一个峰在下午4—5时;室内活动高峰在下午1—5时。(3)幼虫孳生地分布甚广,以雨后积水的容器为主,其月份消长情况与成虫的月份消长是相一致的。(4)一般所见幼虫孳生地水色多略呈淡棕,并常含有腐烂树叶及泥渣。发现幼虫孳生次数较多的孳生中的水的酸碱度为6.5—7.6,总有机氮含量为6—20p.p.m.。(5)白纹伊蚊幼虫多数是单生,少数与他种蚊幼或其他昆虫共同孳生。(6)白纹伊蚊是以卵越冬,自12月半至2月底,越冬期约二个半月。(7)对于白纹伊蚊与当地乙型脑炎的关系亦作出初步分析。

Delphacodes striatella Fallen is one of the important rice pests in Hupei. Accordingto our observations made in the vicinity of Wuchang, Delphacodes striatella Fallen has 6--7generations per year. It passes winter in the nymphal stage. In winter its nymphs hidein the weeds along the sides of fields and streams. The adult stage lasts 5--42 days,egg stage, 5--15 days, and nymphal stage, 9--31 days. It takes 20--42.5 days to com-plete one generation. Each female lays 62--259 eggs, depositing them in the tissue...

Delphacodes striatella Fallen is one of the important rice pests in Hupei. Accordingto our observations made in the vicinity of Wuchang, Delphacodes striatella Fallen has 6--7generations per year. It passes winter in the nymphal stage. In winter its nymphs hidein the weeds along the sides of fields and streams. The adult stage lasts 5--42 days,egg stage, 5--15 days, and nymphal stage, 9--31 days. It takes 20--42.5 days to com-plete one generation. Each female lays 62--259 eggs, depositing them in the tissue ofstalk of the host plants. The adults may be classified into two types, the long wing typeand the short wing type. According to the present study on its life history and behavior, we suggest that thepulling of the Echinochloa crusgalli in rice field is the most economical method for con-trolling this pest. Among the insecticides tested we have found 1/150--300 of 6% γ-BHC,1/1000--1500 Dipterex and 1/200--300 Endrin (19.5%) would give very successful con-trol.

灰稻虱为水稻害虫之一,据我们在武昌地区观察,此虫以成虫及若虫为害,每年发生6—7世代,以若虫期越冬。越冬期间若虫多隐藏在稻田杂草内。成虫期经过5—42天,卵期5—15天,若虫期9—31天,一世代需42.5天。每只雌虫产卵62—259粒,卵粒产于寄主植物茎内。成虫分长翅及短翅两个类型。防治方面以拔除稗草最为有效,药剂方面以1/150—300倍6%666,1/1000—1500敌百虫及1/200—300异狄氏剂有效。

The injurious character of darnel, at least from its weedy side, has been known since early times. The grains of darnel, when ground up with wheat and made into flour, show their poisonous effects in producing headaches, drowsiness, giddiness, uncertain gait, and stupefaction and in animals, convulsions, loss of sensation and even death. Darnel has become a serious pest in wheat field in some localities after it was introduced. It is of nearly the same shape, size and weight as normal grains of wheat and it...

The injurious character of darnel, at least from its weedy side, has been known since early times. The grains of darnel, when ground up with wheat and made into flour, show their poisonous effects in producing headaches, drowsiness, giddiness, uncertain gait, and stupefaction and in animals, convulsions, loss of sensation and even death. Darnel has become a serious pest in wheat field in some localities after it was introduced. It is of nearly the same shape, size and weight as normal grains of wheat and it is exceedingly difficult to separate it by machinery. Darnel and its varieties are not indigeneous to China. They have been disseminated in seed. It is difficult for the average person to identify them with any degree of accuracy. Available literature on the subjects of "seeds" classification and morphology of darnel and its varieties is surprisingly limited. It is quite important to make the seed examination of darnel and its varieties and other weed seeds that are declared noxious for this country. General characteristics of seeds (grains or caryopsis) of the species and its varieties, together with the external characteristics and associated structures are given in this paper. Seed morphology is closely allied with seed taxonomy furnishing the groundwork of information by which seed are distinguished and classified. The principal taxonomic criteria used for classification of darnel and its varieties have much to do with the number and arrangement of florets in the spikelets and the arrangement of spikelets in the inflorescences. Since the darnel "seed" consists of the matured floret, with associated glumes, characters exhibited by these structures are applied as basis of seed classification. On the basis of these and other existent variations in structure and colour of darnel seeds, a relative dependable separation of the samples is made.

关于毒麦的为害,很早就有記述。人与牲畜吃了毒麦都会中毒。毒麦传入我国繁生麦田,在一些地区已造成損害。毒麦的籽实同麦粒的大小和重量相近,很不容易进行机械清除。毒麦及其变种依靠籽实传布,常混杂麦粒难以鑑別。因此,毒麦及其变种籽实的鑑定与分类,对于检疫工作,显得很重要。本文就1950—1964年間,对我国已发生的毒麦,进行鑑定与分类。根据毒麦的穗、小穗,带稃籽实(颖果)及脫粒籽实的基本特征,主要是与种子分类有关的形态学上的特征,进行分析比较与描述。按鑑定的毒麦及其变种,編制籽实分类检索表,并附实物照片与插图。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关weeds的内容
在知识搜索中查有关weeds的内容
在数字搜索中查有关weeds的内容
在概念知识元中查有关weeds的内容
在学术趋势中查有关weeds的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社