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园艺学报 ›› 2013, Vol. 40 ›› Issue (10): 1969-1975.

• 研究报告 • 上一篇    下一篇

土壤pH对富士苹果生长及碳氮利用特性的影响

葛顺峰1,季萌萌1,许海港1,郝文强2,魏绍冲1,姜远茂1,*   

  1. (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;2 栖霞市果业发展局,山东栖霞 265300)
  • 收稿日期:2013-06-04 出版日期:2013-10-25 发布日期:2013-10-25

Effects of Soil pH on Growth,Distribution and Utilization of Carbon and Nitrogen of Malus × domestica‘Red Fuji’

GE Shun-feng1,JI Meng-meng1,XU Hai-gang1,HAO Wen-qiang2,WEI Shao-chong1,and JIANG Yuan-mao1,*   

  1. (1College of Horticulture Science and Engineering,Shandong Agricultural University,State Key Laboratory of Crop Biology,Tai’an,Shandong 271018,China;2Bureau of Fruit Industry Development of Qixia City,Qixia,Shandong 265300,China)
  • Received:2013-06-04 Online:2013-10-25 Published:2013-10-25

摘要: 以2年生富士(Malus × domestica Borkh.‘Red Fuji’)/平邑甜茶(Malus hupehensis)为试材,采用碳氮双标记技术,研究了6个不同土壤pH处理(pH 6.83、6.40、5.87、5.29、4.58和3.82)对植株生长及碳氮利用特性的影响。研究结果表明:苹果植株根系、地上部、植株总干质量、根冠比、叶片净光合速率和15N利用率均随土壤pH的降低而降低,且土壤pH越低降低幅度越大。各器官的15N和13C分配率在不同土壤pH处理间呈现相同的变化规律:叶最多,其次是1年生茎,然后是根,最少为2年生茎。同一器官不同土壤pH处理间15N和13C分配率存在差异,以根和叶最为显著;随土壤pH的降低,叶中的15N和13C分配率逐渐升高,而根中的15N和13C分配率则逐渐降低。

关键词: 苹果, 土壤pH, 生长, 13C, 15N, 分配和利用

Abstract: Two-year-old apple trees(Malus × domestica Borkh.‘Red Fuji’)/Malus hupehensis were used to study the effects of six different soil pH treatments(soil pH 6.83,6.40,5.87,5.29,4.58 and 3.82,respectively)on growth and the characteristics of distribution and utilization of carbon and nitrogen using the track technology of 13C and 15N double mark. The results showed that the biomass of root,above ground,total dry weight,root-cap ratio,net photosynthesis and 15N utilization efficiency decreased with the decrease of soil pH value. The 15N and 13C distribution patternwere consistent in various organs among the different soil pH treatments:Mainly in the leaves,followed by the annual stems,then the roots,and the biennial stems were the least. Differences in the same organ(especially in roots and leaves)in 15N and 13C distribution ratio were found among the different soil pH treatments. With the decrease of soil pH value,the 15N and 13C distribution ratio in leaves increased,while those values in the roots decreased.

Key words: apple, soil pH, growth, 13C, 15N, distribution and utilization

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