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植物源杀虫剂在粮食储藏中的发展前景 总被引:1,自引:0,他引:1
介绍了植物源杀虫剂的作用机理、不同提取方法对作用效果的影响、害虫对植物源杀虫剂的抗性和植物源杀虫剂的应用等方面的研究进展,提出了目前植物源杀虫剂开发存在的问题,展望植物源杀虫剂的发展。 相似文献
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内蒙古自治区在我国九个蜜源基地中,占有十分重要的位置。经过初步调查统计,我区的蜜粉源植物有600余种,分属74科252属。这些资源是自然资源中重要的因子,是养蜂生产取之不尽的绿色资源,充分开发和利用蜜粉资源具有巨大的市场潜力和广阔前景 相似文献
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中国杀虫植物资源的开发利用 总被引:15,自引:0,他引:15
中国杀虫植物资源开发利用研究在某些方面已达到国际先进水平,个别杀虫植物研究已进入到构效关系阶段,该文分析了开发利用途径,并对其应用提出了一些建议。 相似文献
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本书第一版自2008年初版以来,已被多所农业类高校农药合成专业选为教材,成为从事农药合成与生产研究人士的参考著作,并受到好评。《农药化学合成基础(第2版)》在第一版的基础上,将农药化学合成基础知识分散融汇于各章,系统介绍了包括杀虫剂、杀螨剂、杀鼠剂、杀线虫剂、杀菌剂、除草剂以及植物生长调节剂等各类农药重要品种的结构、性能与化学合成。并通过对重要农药品种的化学合成与相关生产实例的剖析,以及先导化合物的优化及新农药分子设计的初步分析,展现给读者一个全面而系统的农药化学合成研究知识体系。 相似文献
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本文研究了杀虫磺、杀虫双、杀虫环、杀菌剂NF133、吲哚乙酸、久效磷和氧化乐果7种农药对蚕豆和大麦姐妹染色单体交换(SCE)的影响。结果发现它们都能强烈地诱导蚕豆和大麦的SCE增加。提示农药是一类对植物较强的DNA诱变剂。 相似文献
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青藏高原28种特有植物提取物抑菌成分活性研究 总被引:2,自引:0,他引:2
我国幅员辽阔,地理环境复杂,青藏高原独一无二的自然生态环境蕴含着大量的特有植物资源,为植物源农药的研究提供了极为有利的条件。如何有效地利用青藏高原特种植物的活性成分,研制出防治农作物病虫害的新型植物源农药,成为当今生物农药的重要研究方向。以实验室已有的30种高原草地植物乙醇提取物为材料,主要以植物病原菌和常用模式菌为活性靶标,采用抑菌圈直径法测定了各种乙醇提取物对几种病原细菌生长的抑制作用。实验结果表明:各提取物对病原细菌的抑制效果有很大差异;香青的乙醇提取物对病原细菌具的抑制效果比较明显。 相似文献
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拉鲁湿地国家级自然保护区保护着其独特的高寒湿地生态系统和丰富的生物多样性,但随着气候变化和人类活动的干扰,入侵植物已出现在拉鲁湿地,对湿地生物多样性和生态系统稳定性构成了潜在威胁。为了解其本底状况,本研究以样线法对拉鲁湿地入侵植物进行了调查,通过9条样线74个样点的实地调查研究,发现:拉鲁湿地共有入侵植物29种,隶属于10科25属,主要为菊科(11种)、豆科(5种)和禾本科(4种),出现频度最高的种类依次是:苦苣菜(Sonchus oleraceus)、灰绿藜(Chenopodium glaucum)、牛膝菊(Galinsoga parviflora);从入侵等级来看,具有明显入侵性的物种有13种,包括4种恶性入侵物种和9种严重入侵物种;拉鲁湿地外来入侵植物区系在属的水平上具有明显的温带性质,美洲起源的植物占据主要优势。拉鲁湿地主要有8种生境,已在其中6种生境中发现入侵植物,人工林生境发现的入侵植物种类高达26种。 相似文献
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随着中职教育改革的不断深入,卫生类中职院校逐渐开始着手建设药用植物园.药用植物园作为学生的实训基地,不仅可以培养更多的中医药人才,更对中医药文化的传播起到了不可磨灭的作用.本文就将从中职卫生院校中药用植物园建设的模式着手,探讨更适合于中职院校的药用植物园发展之路. 相似文献
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植物资源是人类生存和发展的基础,由于人为和自然原因,植物多样性面临着严重威胁。迁地保护是解除威胁的重要方式,植物园和种质库是迁地保护的主要载体。全球植物园迁地保护了105 634种植物,约占全球植物总数的30%,并且保护了超过40%的受威胁物种;同时,全球500多座种质资源库收藏作物资源300多万份。中国的植物园迁地保护了20 000余种本土植物,约占全国总物种数的60%;国家农作物种质库和资源圃共保存种质资源50余万份。植物迁地保护机构在加强植物保护的同时,开展了大量科学研究和资源利用工作。文章在介绍植物迁地保护状况的基础上,综述了相关研究进展,提出了加强我国植物迁地保护的建议,以期促进植物多样性迁地保护和生物多样性可持续利用。 相似文献
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Through analysis of the historical and present development of botanical gardens, both domestic and international, with particular focus on botanical garden practices within the Chinese Academy of Sciences (CAS), the authors propose that science-based botanical gardens (which differ from common public gardens), should be founded on plant diversity inventory and ex-situ conservation of wild plant species. Efforts should be directed to rarer species from biodiversity-rich areas and biodiversity hotspots, utilizing cutting-edge technologies to effectively preserve germplasm in living collections. Science-based botanical garden management should be directed by sound scientific evaluation of plant resources and guaranteed by innovative operational mechanisms. Science-based botanical gardens should also emphasize the establishment of identifiable and specialized living collections, research platforms and recruitment of qualified experts. In addition to curating living specimens, science-based botanical gardens should pursue research and development of new plant varieties or patents based on their plant collections, thus providing continual support to bio-industry. 相似文献
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中国植物园已有百余年发展历史,其大规模建设始于20世纪50年代——以中国科学院为龙头开始了现代植物园建设。迄今,我国植物园总数达162家,已步入快速建设和稳步发展阶段。我国植物园为中国植物科学研究、资源利用、多样性保护及环境教育作出了重要贡献,已发展成为国际植物园体系的中坚力量和发展主流。为应对人类活动对生态系统的不利影响,植物园将扮演更为重要的社会角色。中国植物园应及时调整发展战略,以提升植物保护、科学研究、环境教育和资源利用等基本功能为前提,从国家层面强化植物园体系的整体协同发展,加强关键地区植物保护,促进"一带一路"绿色发展,为可持续发展服务。 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China's science enterprise by making S&T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party's Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献