环塔里木盆地红枣年轮碳、氮、磷元素化学计量特征年际变化规律研究
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(石河子大学农学院,特色果蔬栽培生理与种质资源利用兵团重点实验室,新疆 石河子 832003)

作者简介:

张光鑫(2000-),硕士研究生,研究方向为果树植物营养生理生态研究。E-mail:923601612@qq.com。

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基金项目:新疆生产建设兵团两区建设项目(2021BB023);新疆生产建设兵团科技研究计划项目(2022DB002);新疆生产建设兵团财政科技计划项目(2021AB003);八师石河子市中青年科技创新骨干人才项目(2022RC01);兵团“强青”科技创新骨干人才计划项目(2023CB008-05);石河子大学科研计划项目(CXBJ202002,CXFZ202016)。


Study on the interannual variation patterns of carbon,nitrogen and phosphorus element stoichiometric characteristics of jujube in the circum-Tarim basin
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(College of Agriculture,Shihezi University,Corps Key Laboratory of Cultivation Physiology and Germplasm Resource Utilization of Specialty Fruits and Vegetables,Shihezi Xinjiang 832003)

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    摘要:

    生态化学计量学是研究生物体在生态相互作用过程中多种化学元素平衡关系的科学。为了探讨红枣(Ziziphus jujuba Mill.)年轮碳(C)、氮(N)、磷(P)元素含量及其化学计量比的年际变化规律。以新疆环塔里木盆地的红枣果园为研究对象,测定了红枣年轮(2013—2020年)以及土壤中的C、N、P元素含量,分析红枣年轮C、N、P元素化学计量特征径向变化情况、年平均积累量、年轮与土壤C、N、P元素化学计量特征,并进一步对年轮C、N、P元素化学计量特征与新疆地区地红枣种植面积、年产量和价格因子进行相关性分析。结果表明:(1)红枣树体中C、N、P元素年平均积累量均值分别为487.57、5.50、0.37 g/kg;C∶N、C∶P和N∶P均值分别为94.32、1408.16和15.68。(2)红枣年轮中C、N、P元素含量及其化学计量比随时间的变化趋势各异,其中C元素含量在红枣树干中的分布较为稳定,N和P元素含量呈升高趋势,C∶N、C∶P和N∶P总体呈降低趋势。(3)土壤有机C、全N、全P含量和C∶P、N∶P随土层深度增加显著降低,土壤C∶N则表现为40~60 cm土层显著高于0~20、20~40 cm土层。(4)相关性分析表明,20~40 cm土层的N含量、40~60 cm土层的P元素含量和C∶N以及0~20 cm土层N∶P与红枣年轮中相应的元素含量及计量比的相关性较强,同时红枣年轮C、N、P元素生态化学计量特征与新疆地区红枣种植面积、年产量和价格因子之间具有显著相关性。研究结果为揭示环塔里木盆地红枣年轮C、N、P元素化学计量特征的年际变化规律及旱区果园的合理施肥提供理论依据。

    Abstract:

    Ecological stoichiometry is a science that studies the balance relationship of multiple chemical elements in organisms during ecological interactions. In order to explore the interannual variation patterns of carbon(C),nitrogen(N)and phosphorus(P)element contents and their stoichiometric ratios in jujubeannual rings,taking the jujube orchards in the Tarim basin of Xinjiang as the research object,the C,N and P element contents in the annual rings of jujube(2013-2020)as well as in the soil were measured,the radial changes of C,Nand P element stoichiometric characteristics of the annual rings of jujube,the average annual accumulation,and the stoichiometric characteristics of the annual rings and the soil C,N and P element were analyzed,and the correlation between the annual rings of C,N and P element stoichiometric characteristics and the planting areas,yields and price factors were further analyzed. The results showed that:(1)the mean annual average accumulation of C,N and P element in jujube trees was 487.57,5.50 and 0.37 g/kg,respectively;and the mean values of C∶N,C∶P and N∶P were 94.32,1408.16 and 15.68,respectively.(2)The trends of C,N and P element contents and their stoichiometric ratios of jujube annual rings varied with time. The distribution of C element content in the trunk of jujube trees was relatively stable,N and P element contents showed an increasing trend,and C∶N,C∶P and N∶P generally showed a decreasing trend.(3)Soil organic C,total N,total P content and C∶P,N∶P decreased significantly with the increase of soil depth,while soil C∶N was significantly higher in the 40-60 cm soil layer than in the 0-20,20-40 cm soil layers.(4)Correlation analysis showed that the N element content of the soil layer from 20 to 40 cm,the P element content and C∶N of the soil layer from 40 to 60 cm,and the N∶P of the soil layer from 0 to 20 cm had strong correlations with the corresponding elemental contents and stoichiometric ratios of the annual rings of jujube,while the C,N,P element contents of the annual rings and their stoichiometric ratios had significant correlations with the area of cultivation of jujube in Xinjiang region,the annual production and the price factor. This study could provide a theoretical basis for revealing the interannual change pattern of C,N and P element stoichiometric characteristics of annual rings of jujube in the circum-Tarim basin and the rational fertilization of orchards in dry areas.

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张光鑫,王芳霞,姚东东,张换换,梁天强,赵丰云,于坤.环塔里木盆地红枣年轮碳、氮、磷元素化学计量特征年际变化规律研究[J].中国土壤与肥料,2024,(10):60-68.

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  • 收稿日期:2023-12-22
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  • 录用日期:2024-03-29
  • 在线发布日期: 2024-12-26
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