果梅对秋施15N-硫铵的吸收与利用

园艺学报 ›› 2002, Vol. 29 ›› Issue (4): 317-320.

果梅对秋施¹⁵N-硫铵的吸收与利用

孙　俊^1,3;章　镇¹;盛炳成¹;孙其宝²

(¹南京农业大学园艺系, 南京210095;　²安徽省农业科学院园艺研究所, 合肥230031)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-08-25 发布日期:2002-08-25

Studies on the Absorption and Distribution of ¹⁵N-labelled Ammonium Calcium to Prunus mume Following Autumn Application

Sun Jun^1,3, Zhang Zhen¹, Sheng Bingcheng¹, and Sun Qibao²

(¹ Horticulture Department, Nanjing Agricultural University, Nanjing 210095, China; ² Horticulture Research Institute, Anhui Academy of Agricultural Science, Hefei 230031, China)

Received:1900-01-01 Revised:1900-01-01 Online:2002-08-25 Published:2002-08-25

摘要/Abstract

摘要： 以细叶青梅/ 桃砧为试材, 研究了秋施¹⁵N-硫铵条件下氮的吸收、分配、贮藏和利用。休眠期果梅各器官均有贮氮能力,¹⁵N浓度根系大于多年生枝。秋施氮肥后, 冬季花中¹⁵N浓度显著高于同期其它器官; 春季果仁> 新梢> 果核> 果肉, 说明此期果仁争夺氮素营养的能力最强。新梢停长后, 当年生枝和叶中¹⁵N浓度显著下降, 而多年生器官在4～6 月均有所上升, 而6～9 月又都大幅度下降, 表明此期为多年生器官加粗和新根大量生长之际; 当年生枝¹⁵N浓度虽有所下降, 但始终高于同期多年生器官, 表明贮氮对当年生枝的花芽分化有持续作用。秋季落叶后, 衰老器官中回撤的氮素营养就近运输, 就近贮藏。次年春, 局部贮藏的氮素营养仍能重新为建造新生器官所使用。所以果梅体内氮素营养有随生长中心转移而转移, 且可较长时期重复利用的特性。

关键词: 梅, 氮素营养, 施肥, ¹⁵N-硫铵

Abstract: Mature plants of Prunus mume/ peach rootstock were fertilized with ¹⁵N-labelled ammonium calcium in autumn. Treatment with autumn application augmented 1¹⁵N-storage in roots and the perennial branches and promoted flower-bud differentation in winter. During shoot rapid-growing period , kernel absorbed more nitrogen than did the new shoots ; After then, ¹⁵N in the new shoots was recovered to perennial tissues , perennial organs-thickening became the growing-centre. The ¹⁵N concentration in the current branchs was higher than the perennial branchs , the storage N could promote the next year flower2bud differentation. The withdrawed ¹⁵N from falled organs was remobilized in near tissues during dormant period. In the following season , the withdrawed ¹⁵N was translocated to neworgans. The remobilization and distribution of N were highly correlated with the centre of growth and development in Prunus mume. The absorbed N following autumn application could be utilized for a long time.

Key words: Prunus mume, Nitrogen nutrition, Application, ¹⁵N-labelled ammonium calcium

中图分类号:

S 662. 4

孙　俊;章　镇;盛炳成;孙其宝. 果梅对秋施¹⁵N-硫铵的吸收与利用[J]. 园艺学报, 2002, 29(4): 317-320.

Sun Jun;Zhang Zhen;Sheng Bingcheng;and Sun Qibao. Studies on the Absorption and Distribution of ¹⁵N-labelled Ammonium Calcium to Prunus mume Following Autumn Application[J]. ACTA HORTICULTURAE SINICA, 2002, 29(4): 317-320.

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果梅对秋施¹⁵N-硫铵的吸收与利用

Studies on the Absorption and Distribution of ¹⁵N-labelled Ammonium Calcium to Prunus mume Following Autumn Application

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