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pest     
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  害虫
    APPLICATION OF RADIATION-STERILITY TECHNIQUE IN PEST MANAGEMENT
    应用辐射不育防治害虫
短句来源
    CURRENT STATUS OF ENTOMCGENOUS FUNGI APPLICATION IN PEST CONTROL
    虫生真菌在害虫治理中应用现状
短句来源
    PRELIMINARY STUDY ON THE APPLICATION OF OPTIMAL CONTROL AND MICROCOMPUTER IN PEST CONTROL
    最优控制与微机在害虫防治中的应用初探
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    DISCUSSION OF DIVERSIFIED STRATEGIES FOR INTEGRATED PEST CONTROL OVER CITRUS
    柑桔害虫多样化综合治理策略讨论
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    Preliminary Studies on Forest Quarantine Insect Pest in Gannan County
    甘南县林木检疫害虫初步研究
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  有害生物
    Studies on the Key Technology of Pest Risk Analysis in Plant Protection
    植保有害生物风险分析关键技术研究
短句来源
    This paper analyzaed the necessity quarantine pest risk analysis, introduced every step of PRA, and mainly compared qualitative and quantitative methods.
    本文从检疫性有害生物入侵的途径及危害入手,分析了建立检疫性有害生物风险分析的必要性, 阐明了检疫性有害生物风险分析的各个步骤,着重比较了定性与定量风险分析的方法。
    The Main Pest in Xinjiang Cotton Region and Sustainable Development
    新疆棉区主要有害生物与可持续发展
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    Pest risk analysis of Hemiberlesia pitysophila Takagi
    森林有害生物松突圆蚧的危险性分析
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    History and current situation of pest risk analysis in China
    我国有害生物风险分析(PRA)的历史与现状
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  病虫害
    SCDPM-COMPUTER BASED CROP PEST AND DISEASE MANAGEMENT SYSTEM IN SHAANXI PROVINCE,CHINA
    陕西省主要农作物病虫害计算机管理系统(SCDPM)
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    STUDIES OF EXPERIENTAL LAW OF PESTICIDE PENETRATION AND ITS APPLICATION FOR PEST CONTROL IN COTTON
    农药穿透经验规律及其在棉花病虫害防治上的应用研究
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    An Investigation on Main Species of Pest of Eucalyptus in Baoshan District
    保山市桉树主要病虫害种类调查
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    STUDY ON THE ECOLOGICAL CONTROL OF TEA PEST IN NANYUE FORESTY FARM
    南岳林场茶园病虫害生态控制研究
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    Ridit Analysis for Forest Pest
    森林病虫害的Ridit分析
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    PROGRESS IN BREEDING FOREIGN RESEARCH FOR PEST RESISTANCE IN VEGETABLES
    国外蔬菜抗育种研究的进展
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    CATASTROPHE THEORY AND APPLICATION OF SOME MAIN PEST IN AGRICULTURE
    农业病危害的突变理论及应用
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    PROGRESS AND PROSPECT OF RICE PEST AND DISEASE INTEGRATED CONTROL IN GUANGXI
    广西水稻病综合防治的进展与展望
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    Grey Dynamic Interconnection Analysis of Agricultural Pest System
    农业病系统灰色动态关联分析
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    Bio-Controlling Coffee Scale Insect and Integrated Pest Management of Coffee in Yunnan
    咖啡蚧的生物防治和云南咖啡害综合治理浅见
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  pest
Pest risk assessment of Dendroctonus valens, Hyphantria cunea and Apriona swainsoni in Beijing
      
According to the international methods of pest risk analysis and urban forestry characteristics in Beijing, a quantitative risk assessment system in Beijing for three primary non-indigenous pests was proposed.
      
This pest mainly distributed in partial Asian countries (China, Japan, Korea, Mongolia) and Far East Russia, while in China it presented in Heilongjiang, Jilin, Liaoning, Shandong, Inner Mongolia, Hebei, Taiwan Provinces and Tianjin City, etc.
      
Pupation and feeding of the pest insects Spodopteralitura Fabricius and Helicoverpa armigera Hubner are shown to be affected with restraining effects which increase with the increasing levels of oil concentration.
      
urophylla essential oil on pathogenic fungi and pest insects.
      
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The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over...

The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over the treated area, all theinsecticides tested were found to be effective when freshly applied. After oneweek, how-ever, only preparations containing DDT remained effective. DDTwater suspension was markedly better than DDT in kerosene, soybean oil, oracetone. Trees treated with a 5% DDT water suspension were still very toxic tothe caterpillars at the end of six weeks. The number of caterpillars crawling over a DDT-treated area would notinfluence the toxicity of the DDT film under practical field conditions. In oneexperiment all area of twenty inches square, treated with a 5% DDT suspension,still showed high toxicity to the caterpillars after 1,800 larvae had crawled overthe area in a period of nine days. Caterpillars were found to be more resistant to DDT in summer than inwinter. By increasing either the concentration of DDT to 10-15% or thewidth of the treated area to 2-3 feet, the "trunk treatment method" could beused as well in summer, if the caterpillars were beaten down to the grounedafter the trees had been treated with DDT. Under the field conditions in Nanking, 1947-48, the pine caterpilIars beganto leave the crown part of the trees and seek hibenation quarters in November.They became active again early in March, hence tree should he treated withDDT not later than the dates mentioned above. A total of 157,658 trees were treated with DDT on the Purple Mountain,Nanking, 1948. Examinations showed that larval population decreased 90-99%in the treated area, while in the check area an increase in population of16-350% had been observed.

本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药后将松毛虫从树上击落,使其在爬返树冠...

本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药后将松毛虫从树上击落,使其在爬返树冠时接触药剂而死亡。 (五)自然情形下,南京松毛虫在十一月即开始下树越冬,至来年三月初开始活动上树,故采用树干涂药法防治下?

Lycaena (Polyommatus) boetica L. is an important pest of green manureplants, being especially injurious to several species of Crotalaria at Liuchow,Kwangsi. This small butterfly hibernates in the egg stage on flower buds,immature pods and other parts of the hosts. Hatching takes place early inMarch. The first adult is seen in April. The larvae can be found from Marchtill December, causing damage to flowers and pods. Under insectary conditionsthis butterfly was found to have 7-8 generations annually. Each...

Lycaena (Polyommatus) boetica L. is an important pest of green manureplants, being especially injurious to several species of Crotalaria at Liuchow,Kwangsi. This small butterfly hibernates in the egg stage on flower buds,immature pods and other parts of the hosts. Hatching takes place early inMarch. The first adult is seen in April. The larvae can be found from Marchtill December, causing damage to flowers and pods. Under insectary conditionsthis butterfly was found to have 7-8 generations annually. Each generationvaried from 20-176 days.

紫蓝小灰蝶在广西柳州沙塘是因种野百合属绿肥豆荚的主要害虫。此外该虫还为害木豆、刀豆和扁豆。根据文献该虫也为害荷兰豆和蚕豆。 小灰蝶和豆荚螟为害绿肥豆荚的特征和区别文中有详细的叙述。 小灰蝶以卵态在绿肥的花苞、嫩荚、茎和叶上越冬。幼虫为害豆类的时期自3月下旬直至12月上旬。在饲育室内一年发生7—8代。一世代需时20—176日。 成熟绿肥豆荚被害率自1.8—22.6%不等,本虫更为害花朵和嫩荚,使之凋落,不能结实。 绿肥作物终年开花结荚,不独是小灰蝶越冬的理想寄主,也助长其他重要豆作害虫如豆荚螟的繁殖。作者建议及时和合法刈割绿肥是解决本虫和若干其他豆作害虫的有效方法。

The present paper gives a report on the observations of the citrus psylla, Diaphorina citri Kuwayama, found in Focchow and Changchow of Fukien Province. The insect has been reported as an important citrus pest in south-eastern Asia, and is heretofore recorded from Kwangtung by Hoffmann (1936) and from Taiwan by Shiraki (1934). The citrus psylla attacks l3 species of plants of the family Rutaceae. Eggs are laid on the leaves of the young growth. The feeding of both the nymphs and adults on foliage of the...

The present paper gives a report on the observations of the citrus psylla, Diaphorina citri Kuwayama, found in Focchow and Changchow of Fukien Province. The insect has been reported as an important citrus pest in south-eastern Asia, and is heretofore recorded from Kwangtung by Hoffmann (1936) and from Taiwan by Shiraki (1934). The citrus psylla attacks l3 species of plants of the family Rutaceae. Eggs are laid on the leaves of the young growth. The feeding of both the nymphs and adults on foliage of the new terminal growth results in the leaves, becoming thick and leathery. The leaves and the young shoots are usually distorted, dwarfed, or in severe cases, even dried. The annual life cycle of the insect in Fukien Province has not been investigated thoroughly. However, preliminary observations made during the year of 1952 show that different developmental tsages of citrus psylla could be found all the year round. There is no marked phenomenon of hibernation. Concentration of a number of adults on the same leaf usually occurs during the winter months. Both nymphs and adults become very abundant in April when dam- ages are most severe. Sixteen days are required for the insect to complete a generation in August. The number of individuals de- creases after September. The nymphs are attacked heavily by three species of chalcid parasites of the family Encyrtidae. Morphological descriptions of the different stages of the insect are also given in this paper.

柑桔木虫分布于亚洲东南的热带和亚热带地区,为害芸香科植物,是柑桔类主要害虫之一。国内除台湾、广东外,其他各地尚无报告。现知福建的福州、漳州也都有,本文系在福州观察的记述。成虫栖息取食常在芽和叶里的叶脉上。产卵于嫩芽,若虫孵化后就在新梢为害。被害叶芽枯干,枝梢萎缩,新叶畸形卷曲。生活史尚待详细研究,但根据一年来的初步观察,一年到头都可以找到各个虫期;自四月以后为害渐见严重,至九、十月则逐渐减少。夏季完成一个世代约需十六天。冬季多以成虫密集叶里,但无休眠迹象。育得跳小蜂科寄生蜂三种,九月至十一月若虫被寄生者甚多。本文对于柑桔木虫各期形态有简略的叙述。

 
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