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botanical
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  植物
    Preliminary Investigation on the Resources of Botanical Insecticides in North-western China
    西北地区杀虫植物资源初步调查
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    A preliminary study on the resources of botanical insecticides in east Gansu province
    陇东地区杀虫植物资源的研究初报
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    Development of 2.5% Sankusu aqueous solution,a botanical pesticide
    植物源杀虫剂2.5%三苦素水剂的开发试验
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    Study on Controlling Erannis ankeraria Staudinger With Botanical Insecticide of 1% Kusensu
    应用1%苦参素植物杀虫剂防治落叶松尺蛾的研究
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    Research and Development on the Botanical Insecticide of 0.2% Celangulins Emulsifiable Concentrate
    植物杀虫剂0.2%苦皮藤素乳油的研究与开发
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  植物源
    Development of 2.5% Sankusu aqueous solution,a botanical pesticide
    植物源杀虫剂2.5%三苦素水剂的开发试验
短句来源
    Advances in Research and Application of Botanical Pesticides
    植物源农药的研究和应用进展
短句来源
    Advances in Research and Application of Botanical Pesticides
    植物源农药的研究和应用
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    Advance on Botanical Fungicides
    植物源杀菌剂研究进展
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    Studies and applications of botanical insect antifeedants
    植物源昆虫拒食活性物质的研究和应用
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  植物性
    The Development of Botanical Pesticide
    植物性农药的发展
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    Using the botanical pesticide KPT EC to control the Phyllonistis citrella by leaf and new shoot immersion at the concentration of ai. 30, 15 mg/kg respectively, results showed that the moralities of the larvae after 5 days' treatment were 89.63%, 63.02% by 3s' leaf immersion.
    用植物性杀虫剂苦皮藤素Ⅳ(KPT乳油)有效成分30、15mg/kg防治柑橘潜叶蛾,采用离体叶片浸叶法处理5s,3d后,幼虫校正虫口减退率分别为89.63%、63.02%;
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    Studies on Controlling of Botanical Insecticides to Wheat Blossom Midge
    植物性杀虫剂防治小麦吸浆虫研究
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    Preliminary Studies on the Effects of Three Botanical Insecticides to the Adult of Maladera sp.
    三种植物性杀虫剂对烟草码绢金龟生物活性的初步研究
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    Study on the effect of three botanical insecticides to Adult Maladera sp.
    三种植物性杀虫剂对烟草码绢金龟生物活性的研究
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  “botanical”译为未确定词的双语例句
    Studies on the Mixed Use Technique of Botanical Insecticide KPT Emulsifiable Concentrate with B.t. and Synergist SV1
    植物质杀虫剂苦皮藤乳油与B.t.及增效磷(SV_1)混用技术研究
短句来源
    STUDY ON THE MIXED BOTANICAL INSECTICIDES
    混配型植物质杀虫剂的研究
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    Sustained Control of Pests and Diseases in Botanical Gardens
    植物园病虫害的可持续控制
    The control effect of the botanical fungicides on postharvest anthracnose of apple were 26.5%,23.5% respectively.
    活体试验表明,绿液、竹焦油防效分别为 26.5%、23.5%。
短句来源
    The field trials conducted from2001to2002in Guangshui of Hubei Province showed that1%sanguinarine WP ,a new botanical pesticide ,gave good contol effect against Tetranychus urticae on apple. The effect of1%sanguinarine WP ( 2500times dilution ),was similar to that of pyridaben20%WP by2500times dilution.
    2001~2002年,在湖北广水进行的2年1%血根碱可湿性粉剂防治苹果二斑叶螨的田间药效试验表明,1%血根碱可湿性粉剂对苹果二斑叶螨有良好的灭杀效果,使用浓度在2500倍时,防治效果与生产上推广使用的20%哒螨灵可湿性粉剂2500倍液相当。
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  botanical
Seasonal dynamics of the structure of bacterial communities and, in some soil types, its spatial dynamics accounted for by changes in the botanical structure of peat across its profile have been revealed.
      
The dependence of the characteristics of the regional floras on their positions in the system of botanical-geographic zones, the size of the protected area, and other factors have been studied in these reserves.
      
Five classes of ecologically valuable areas are distinguished according to the need for integrated protection of landscapes and their components or botanical and zoological objects.
      
Experience in Combined Glaciological and Botanical Studies on the Primary Plant Successions on Young Moraines in the Central Alt
      
A comprehensive study of paleobotanical materials collected in the northern part of the Eastern Sayan was performed, including botanical analysis of peat, palynological and carpological analysis, and radiocarbon dating.
      
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This paper gives a concise introduction of insect-plant relationships, the recent development on the investigations of botanical insecticides, the chemistry of plant resistance to insects in relation to the breeding of resistant varieties, and the active defense of plants against insect attack in relation to insect control.These four problems are closely interrelated. The discussions were mainly based on the biochemistry and ecology point of view and some of the results of research on botanical insecticides...

This paper gives a concise introduction of insect-plant relationships, the recent development on the investigations of botanical insecticides, the chemistry of plant resistance to insects in relation to the breeding of resistant varieties, and the active defense of plants against insect attack in relation to insect control.These four problems are closely interrelated. The discussions were mainly based on the biochemistry and ecology point of view and some of the results of research on botanical insecticides relevant to this area recently carried out in the Laboratory of Insect Toxicology,South China Agricultural Univsrsity were presented. In forecasting of insect outbreaks the authors pointed out that usually methematical models upon which predictions were based centered on two major assumptions. One was the fluctuations in weather acted as the main determination of insect abundance and the other had to do with the interplay of such biological factors as parasites, predators, and pest pathogens. These predictive models sometimes failed because they were predicted on the belief that plants played a totally passive role in population dynamics, while in fact, it is the plant that is really pulling the strings. In China, investigations on insecticides from natural products and the defense mechanisms of plants to insect attack undoubtedly lead to breakthroughs in the system of integrated pest management (IPM) .

本文介绍了植物与昆虫之间的关系、植物杀虫剂最近研究的进展、植物抗虫性的化学及其在抗虫育种中的作用、植物对昆虫的主动防御及其在害虫防治中应用的展望。主要从生物化学及生态学方面进行讨论,指出这四个问题具有内在的联系。对植物杀虫剂的探入研究,今后可能获得对环境安全而对害虫不产生抗药性的新一代农药。研究作物抗虫的遗传基因,可以培育出高抗优良品种。对于植物对害虫主动防御的探索,可以在害虫预测预报上获得新的进展。作者认为在我国开展植物自身控制害虫作用的研究具有深远的意义,将可使害虫综合防治获得划时代的突破。

Based on the existing conditions of chemical control of harmful in- sects and its progress in the present research,several tendentious pro- blems were advanced in this paper.The slow-redease insecticides with peculiar properties of the botanical ones in particular will be developed in order to obtain the new chemicals to be safe to the environment and the non-target living things and to produce no resistance to the harm- ful insects.Thus,the disadvantages brought about by chemical her- bisides in the past...

Based on the existing conditions of chemical control of harmful in- sects and its progress in the present research,several tendentious pro- blems were advanced in this paper.The slow-redease insecticides with peculiar properties of the botanical ones in particular will be developed in order to obtain the new chemicals to be safe to the environment and the non-target living things and to produce no resistance to the harm- ful insects.Thus,the disadvantages brought about by chemical her- bisides in the past will be covercome.Also,the unfavourable conditi- ons can be created for the harmful insects to live by using the relati- onship between the plants ahd insects.Therefore,controlling the po- pulation of the harmful insects a major problem in the integrated ma- nagement of them.The interpretation of plants preventing themselves from being attacked by harmful insects will give a clue .to the predic- tion of the harmful insects so as to raise the accuracy of prediction. Before the outbreak of the harmful insects,the defence system of the plants activated by man can obtain the field of“the preventive agri- culture.”In the integrated agriculture,the harmful insect management is closely related to the entire agroecology,biochemistry,chemical ecology,and the high quality and high yielding of farm crops,which is one factor to be taken into consideration in the integrated manage- ment of them.

本文从害虫化学防治的现状和目前的研完进展情况提出了几个趋向性问题:发展特异性缓效型,特别是植物质杀虫剂,以求获得对环境和非靶子生物安全,以及对害虫不易产生抗性的新一代农药,克服过去化学农药的缺点;利用植物与昆虫之间的相互关系,人为地制造不利于害虫生存的条件,而控制害虫种群数量是害虫综合管理法则中所要研究的主要问题;植物对害虫主动防御性的阐明,可以给害虫测报工作给予新的“启示而提高测报准确性;在害虫发生之前人为地“活化”植物的主动防御性而达到所谓“预防性农业”的境界。在“综合性农业”中,害虫管理是和整个农业生态学、生物化学、化学生态学及农作物的高产、优质等相联系,因而,是综合考虑中的因素之一。

This paper gives a critical review of toosendanin, including its source, isolation, physical and chemical properties,industrial production, toxicology to vertebrates and insects, with special emphasis on the potential of development as a novel class of botanical insecticides. As far as the authors are aware, the chinaberry tree Melia toosendan Sieb. et Zucc. is mainly found in China and toosendanin was first isolated in China .We are the first group working on toosendanin as an insecticide. The unique...

This paper gives a critical review of toosendanin, including its source, isolation, physical and chemical properties,industrial production, toxicology to vertebrates and insects, with special emphasis on the potential of development as a novel class of botanical insecticides. As far as the authors are aware, the chinaberry tree Melia toosendan Sieb. et Zucc. is mainly found in China and toosendanin was first isolated in China .We are the first group working on toosendanin as an insecticide. The unique properties of the toxic principles of toosendanin as an antifeedant, systemic and stomach poison as well as insect growth regulators, local availability, safe to the environment and com, patibility with the agroecosystem emphasize its ample potential in insect pest management system.

本文对川楝素的来源、发现、提制、生产、应用及药理、毒理、毒性等方面的研究历史、现状及展望作了简单叙述。旨在讨论进一步研究这一天然化合物的重要意义。特别是通过对川楝素在医学上的药理、毒性等方面研究成果的回顾、总结,而为深入研究其在害虫防治方面的作用机制及应用措施提供依据、寻找线索、开创思路。

 
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