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园艺学报 ›› 2005, Vol. 32 ›› Issue (6): 1070-1072.

• 研究报告 • 上一篇    下一篇

草莓对不同形态氮素的吸收与分配

张 青;彭福田;姜远茂;彭 勇;周 鹏   

  1. (山东农业大学园艺科学与工程学院, 泰安271018)
  • 收稿日期:2004-01-16 修回日期:2005-05-08 出版日期:2005-12-25 发布日期:2005-12-25

Absorption and Partition of Different Nitrogen Forms in Strawberry

Zhang Qing;Peng Futian;Jiang Yuanmao;Peng Yong;Zhou Peng   

  1. ( Institute of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China)
  • Received:2004-01-16 Revised:2005-05-08 Online:2005-12-25 Published:2005-12-25

摘要: 以水培‘鬼怒甘’草莓(Fragaria grandiflora Ehrh. ‘Guinugan’) 为试材, 利用15N示踪技术研究果实迅速生长期对不同形态氮素的吸收分配特性。结果表明: 根际施肥, 15N吸收利用率依次为: 硫酸铵>甘氨酸>硝酸钙>谷氨酸, 与硝态氮混施, 铵态氮、甘氨酸态氮15N利用率提高; 叶片涂抹模拟根外追肥, 15N利用率依次为尿素>甘氨酸>谷氨酸。果实对硝酸钙的竞争力低于叶片, 对硫酸铵、甘氨酸和谷氨酸的竞争力强于叶片。

关键词: 草莓, 氮素形态, 氮肥利用率, 15N

Abstract: The technique of stable isotope 15N trace was used to study the absorption and partition to different nitrogen forms in strawberry fruit ripe stage using‘Guinugan’ ( Fragaria grandiflora Ehrh. ) as materials. Results indicated that underwater culture condition, the rank of 15N utilization rate was (NH4 )2SO4 >
Gly >Ca (NO3)2 >L-Glu, and 15Nutilization rate of NH+4-N and Gly-N was increased when they were mixed with NO-3-N; When the leaf was labeled , the rank of 15N utilization rate was Urea > Gly >L-Glu. The competition ability to Ca (NO3)2 of fruit was lower than that of leaf , but concerning to (NH4)2SO4, Gly and L-Glu it was higher.

Key words: Strawberry, Nitrogen form, Nitrogen fertilizer utilization rate, 15N

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