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园艺学报 ›› 2012, Vol. 39 ›› Issue (2): 343-348.

• 研究报告 • 上一篇    下一篇

苹果砧木生长及吸收利用硝态氮和铵态氮特性比较

王海宁,葛顺峰,姜远茂*,魏绍冲,彭福田,陈  倩   

  1. 山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,山东泰安 271018
  • 出版日期:2012-02-25 发布日期:2012-02-25
  • 通讯作者: 姜远茂 E-mail:ymjiang@sdau.edu.cn

Growth Characteristics and Absorption,Distribution and Utilization of 15NO3--N and 15NH4+-N Application for Five Apple Rootstocks

WANG Hai-ning,GE Shun-feng,JIANG Yuan-mao*,WEI Shao-chong,PENG Fu-tian,and CHEN Qian   

  1. State Key Laboratory of Crop Biology,College of Horticulture Science and Engineering,Shandong Agricultural University,Tai’an,Shandong 271018,China
  • Online:2012-02-25 Published:2012-02-25
  • Contact: JIANG Yuan-mao E-mail:ymjiang@sdau.edu.cn

摘要: 以一年生平邑甜茶(Malus hupehensis Rehd.)、八棱海棠(M. micromalus Makino)、楸子[M.  prunifolia(Willd)Borkh.]、新疆野苹果[M. sievesii(Ledeb.)Roemer]、东北山荆子(M. baccata Borkh.)实生苗为试材,采用15NH4NO3和NH415NO3分别标记的方法,研究5种砧木的生长特性及其对NH4NO3中硝态氮和铵态氮的吸收、分配和利用特性。结果表明:幼苗生物量顺序为楸子 > 平邑甜茶 > 八棱海棠 > 新疆野苹果 > 东北山荆子;根系总表面积、总根长、根尖数均以楸子最大,东北山荆子最小。5种砧木对硝态氮和铵态氮的利用率顺序为楸子 > 新疆野苹果 > 平邑甜茶 > 八棱海棠 > 东北山荆子,5种砧木对硝态氮的利用率均高于铵态氮利用率,并且硝态氮利用率与根尖数呈显著正相关。5种砧木植株各器官从硝态氮中吸收分配到的15N量对该器官全氮量的贡献(Ndff)均高于从铵态氮中吸收分配到的;标记硝态氮时,楸子叶、茎和根的Ndff均最高,平邑甜茶最低;标记铵态氮时,东北山荆子叶、茎和根的Ndff均最高,新疆野苹果叶、楸子茎、平邑甜茶根最低。标记的硝态氮和铵态氮在器官中的分配均为叶 > 根 > 茎。

关键词: 苹果, 砧木, 吸收, 分配, 利用

Abstract: Five kinds of one-year-old apple rootstocks[Malus hupehensis Rehd.,M. micromalus Makino,M. prunifolia(Willd)Borkh.,M. sievesii(Ledeb.)Roemer and M. baccata Borkh.]were used to study the growth characteristics and the characteristics of absorption,distribution and utilization of labeled 15NH4NO3 and NH415NO3. The results were as follows:The biomass of five rootstocks from high to low were M. prunifolia(Willd)Borkh. > M. hupehensis Rehd. > M. micromalus Makino > M. sievesii(Ledeb.)Roemer > M. baccata Borkh. The root surface area,total root length and root tips of M. prunifolia(Willd)Borkh. were the largest of the five,while M. baccata Borkh. were the least. The 15NO3--N and 15NH4+-N utilization ratio of five rootstocks from high to low were M. prunifolia(Willd)Borkh. > M. sievesii(Ledeb.)Roemer > M. hupehensis Rehd. > M. micromalus Makino > M. baccata Borkh. The 15NO3--N utilization ratio of the five kinds of rootstocks were higher than that of 15NH4+-N,and the 15NO3--N utilization ratio of the five kinds of rootstocks were significantly correlated with root tips. Ndff value of 15NO3--N of the five kinds of rootstocks were higher than that of 15NH4+-N,and the value of leaves,shoots and roots of M. prunifolia(Willd)Borkh. with 15NO3--N treatment was the highest,meanwhile value of M. hupehensis Rehd. with 15NO3--N treatment was the lowest. The Ndff value of leaves,shoots and roots of M. baccata Borkh. with 15NH4+-N treatment was the highest. The leaves of M. sievesii(Ledeb.)Roemer,the shoots of M. prunifolia(Willd)Borkh.,the roots of M. hupehensis Rehd.with 15NH4+-N treatments were the lowest. The two kinds of 15N distribution ratio of leaves were the highest,while the shoots were the lowest.

Key words: apple, rootstock, absorption, distribution, utilization

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