中国农业科学Issue(10)：1995-2002,8.DOI:10.3864/j.issn.0578-1752.2014.10.013
增氧栽培对桃幼树根系构型及氮素代谢的影响
Effects of Aeration Cultivation on Root Architecture and Nitrogen Metabolism of Young Peach Trees
摘要
Abstract
[Objective] This study was conducted to evaluate the effects of aeration cultivation on root architecture and nitrogen metabolism of young peach trees in order to lay a foundation for finding out the role of oxygen in the peach tree root growth and development.[Method]Two-year-old peach tree‘Chunmei’ was selected to study the effects of aeration cultivation on soil O 2 content, root activity, root architecture and nitrogen metabolism of young peach trees. Plastic box with uniform small holes at the bottom was used as the aerobic cultivation device. There were two treatments including the control (non-aeration) and aeration cultivation. The change of soil O2 concentration, root activity, root total nitrogen and root transaminase activity was determined in the peach tree growing season. The professional edition of root analysis system WinRHIZO was used to determine the parameter of root architecture after the new shoots slightly stop growing.[Result]Aeration cultivation improved soil O2 content. After aeration cultivation, the total root length, total root surface area, number of first lateral roots and second lateral roots, number of tips, total root volume, number of forks, number of cross increased by 50.53%, 42.66%, 13.64%, 18.51%, 44.94%, 5.48%, 37.01% and 54.41%, respectively compared with the control. The average length of first lateral roots and root average diameter decreased. The angle between first lateral roots and vertically downward direction was decreased, the number of small angle increased, and root tended to vertically distribution under aeration cultivation. The dry matter of roots which the diameter was less than 2 mm was significantly higher than control and the dry matter of roots which the diameter was greater than 5 mm was decreased under aeration cultivation. The activity of root system, the activities of NR, GOT, GPT and the content of root total nitrogen were higher than the control under aeration cultivation and they increased 19.04%, 29.80%, 6.56%, 19.91%and 18.90%, respectively. After aeration cultivation, the dry matter accumulation and stem of young peach trees were higher than the control. [Conclusion] Aeration cultivation can increase the soil O 2 concentration and promote the occurrence and growth of fine roots. It can induce root straight down growth and improve the level of the root nitrogen metabolism. It is advantageous to accumulate the dry matter and promote the growth and development of young peach trees.关键词
桃幼树/增氧栽培/根系构型/根系活力/氮素代谢Key words
young peach tree/aeration cultivation/root architecture/root activity/nitrogen metabolism引用本文复制引用
肖元松,彭福田,张亚飞,齐玉吉,王贵芳,王新亮,束怀瑞..增氧栽培对桃幼树根系构型及氮素代谢的影响[J].中国农业科学,2014,(10):1995-2002,8.基金项目
国家现代农业产业技术体系项目（CARS-31-3-03）、现代农业产业与山东省高校优秀科研创新团队计划资助项目 （）
