摘要
植物根系是化感物质进入土壤的重要通道。根系分泌物中含有大量具有化感活性的物质,其中以小分子的酚、酸最为常见,这些物质对植物自身及植物根际微生物和土壤酶具有广泛影响,一度成为化感研究的重要内容。自然状态下根系分泌化感物质的活性效应与植物根系分泌化感物质的强度和累积、化感物质本身的特性以及土壤对化感物质的吸附和降解能力有关。因此,研究化感物质在土壤中的迁移、吸附-解吸附、降解等环境行为是揭示化感物质累积机制的重要工作,应该成为化感研究的重要内容,在今后的研究中应给予充分重视。
The exudate of roots was important carrier by which the allelochemicals entered soil.Allelochemicals may have wide effects on plant,microbial and enzyme in soil,which were the main contents in allelopathy research.Actually,the allelopathy of roots exudates had to depend on long-term accumulation of allelochemicals under natural conditions.This course was not only related to the intensity that plant roots secreted allelochemicals,but the characteristics of allelopathic substances and the sorption or degradation capability of soil.Therefore,the study on accumulation mechanism of allelochemicals also was one part of the main contents of allelopathy research.Thereinto,the environment behaviors such as migration,sorption and desorption and degradation were tightly relevant to accumulation of allelochemicals,which was the important to reveal the accumulation mechanism of allelochemicals and should be paid more attention in the later research.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第2期501-507,共7页
Chinese Journal of Soil Science
基金
教育部博士点专项科研基金(2006434010)
中国公益性行业科研专项(200704032)
山东省自然科学基金(Y2007D30)资助
关键词
根系分泌物
化感物质
生态效应
环境行为
Exudates of roots
Allelochemicals
Ecological effects
Environment behaviors
