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insect control agent
相关语句
  昆虫调控剂
     Study of Insect Control Agent in Plant Ⅱ.Separation and Bioassay of Active Constituents of Daphe genkwa
     植物源昆虫调控剂研究──Ⅱ芫花活性组份的分离与生物测定
短句来源
  相似匹配句对
     MICROSPORIDIA FOR INSECT CONTROL
     微孢子虫在害虫防治中的应用和研究
短句来源
     F, as control.
     F,对照组。
短句来源
     U. in control.
     U.
短句来源
     And it might be useful in insect control.
     同时为害虫的防治提供一定的理论依据。
短句来源
     RESEARCH AND DEVELOPMENT OF THE PLANT-BASED INSECT CONTROL AGENTS
     植物源害虫控制剂的研究与开发
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  insect control agent
thuringiensis as an economic insect control agent is dependent upon various factors.
      
Spinosyns A and D are the active ingredients in an insect control agent produced by fermentation of Saccharopolyspora spinosa.
      
It is used in agriculture as a potent insect control agent with exceptional safety to non-target organisms.
      
All of these attributes make TM among the safest, most selective, and most useful insect control agent ever discovered.
      


Daphe genkwa Sieb. et Zncc contains insect control agent, especially in their roots and leaves.The ethanol extract liquid of Daphe genkwa leaves was isolated by by means of centriftlge-thin-layer chromatography and treated with different polarity solvents,thus obtaining 10 constituents.The bioassay with Abraxas miranda larvae has found that there are 4 lower polarity and higher actlvity constituents among the 10; that after treating the leaves with the 4 constituents,the quantity of leaves eaten by the...

Daphe genkwa Sieb. et Zncc contains insect control agent, especially in their roots and leaves.The ethanol extract liquid of Daphe genkwa leaves was isolated by by means of centriftlge-thin-layer chromatography and treated with different polarity solvents,thus obtaining 10 constituents.The bioassay with Abraxas miranda larvae has found that there are 4 lower polarity and higher actlvity constituents among the 10; that after treating the leaves with the 4 constituents,the quantity of leaves eaten by the larvae decreases by 72% and the death rate of the larvae reaches 41.67% ̄ 66. 60%;and that; among the extracts of roots, stem,leaves,roots extract has the most activity.

将芫花根皮乙醇提取液,用快速离心薄层分离,以正已烷等配成不同极性的溶济洗脱,获得10个组份,再用卫茅尺蠖幼虫进行生物测定.发现2~4个极性较低、流份活性较高.其幼虫食叶量对照(茶枯水处理)减少72%.死亡率达41.67%~66.6%,根、茎、叶3部分乙醇抽取物,以根部活性最强.拒食-胃毒是其主要作用途径.

This paper provides an overview of the achievements in the research and development of plant-based insect control agents. In light of pesticide development.the methods and apprcaches are advanced concerned with a comprehensive understanding of plant's active comopnds and some problems peed in the study of the bioactivity-structure relationship and in the integrate exploitation of insecticidal plant resources.

综述了植物源害虫控制剂研究与开发成就。针对农药发展要求提出全面认识植物活性成分的方法和途径,以及在构效失系研究和综合利用杀虫植物资源方面应注意的几个问题。

It is summarized a new class of fermentation-derived insect control agents spinosyns which is effective against a variety of lepidoteran insect pests and exhibits activity in varying degrees against a broad spectrum of insect pests. In recent years, people have carried many investigations about spinosyns and acquired many valuable results.Their chemical structure, physical characters, development, efficacy ,key points of the total synthesis and the efforts to improve the efficacy of the...

It is summarized a new class of fermentation-derived insect control agents spinosyns which is effective against a variety of lepidoteran insect pests and exhibits activity in varying degrees against a broad spectrum of insect pests. In recent years, people have carried many investigations about spinosyns and acquired many valuable results.Their chemical structure, physical characters, development, efficacy ,key points of the total synthesis and the efforts to improve the efficacy of the spinosyns are reported.

介绍了一类由发酵产物分离的新颖大环内酯化合物多杀菌素 ,它对鳞翅目害虫活性很高 ,且对大多数的咀嚼式口器害虫有效。阐述了其化学结构、物理性质、生物活性、开发过程、全合成中的难点以及对分子改造的最新研究

 
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