李宏建;王宏;于年文;张秀美;里程辉;宋哲;

• 1:辽宁省果树科学研究所

摘要(Abstract)：

【目的】揭示苹果树叶片光合参数、树体生长量和果实品质对不同覆盖物的差异性反应,为苹果园地面管理覆盖物的合理选择提供参考依据。【方法】以辽宁省果树科学研究所自主选育的‘望山红’/‘辽砧109’组合苹果树为试材,果园地面分别覆盖农用地毯、碎木屑和园艺地布,以清耕为对照,调查地面覆盖后土壤地温、土壤含水量、叶片光合参数、树体生长量、果实品质的差异。【结果】2016年、2017年农用地毯、碎木屑、园艺地布、淸耕(CK)土壤温度随土层深度增加而降低,土壤含水量随土层深度增加而升高。与清耕(CK)相比,园艺地布覆盖提高土壤温度,农用地毯和碎木屑覆盖降低土壤温度;农用地毯、碎木屑、园艺地布覆盖能提高土壤含水量。3种覆盖处理均能提高叶片净光合速率、水分利用效率、叶绿素相对含量。其中,农用地毯覆盖后叶片净光合速率、水分利用效率、叶绿素相对含量变异系数最小、稳定性优于其他处理,而碎木屑覆盖季节性差异明显、变异系数高、稳定性差。3种覆盖处理均能提高单叶质量、叶片厚度、树高、覆盖率、总枝量,影响枝类组成比例。其中,农用地毯覆盖后单叶质量、叶片厚度、覆盖率、总枝量、中枝、短枝比例等指标高于同期其他处理,而长枝比例低于其他处理。春季园艺地布覆盖后的新梢长度显著高于其他处理,而夏季农用地毯和碎木屑覆盖后的新梢生长速度快。农用地毯覆盖后果实单果质量、硬度、可溶性固形物、固酸比等指标最高,其次为碎木屑。农用地毯、碎木屑、园艺地布覆盖后显著提高果面红色着色程度,提高果实中葡萄糖、果糖、蔗糖、莽草酸含量,降低苹果酸、柠檬酸含量。【结论】综合比较3种覆盖物对土壤温度、土壤含水量、植株叶片参数、树体生长量和果实品质的影响,作用效果从高到低分别为农用地毯、碎木屑和园艺地布。

关键词(KeyWords)： 苹果;覆盖物;农用地毯;光合参数;枝类组成;品质

Abstract:

Keywords:

基金项目(Foundation): 现代农业产业技术体系建设专项(CARS-27);; 辽宁省果树产业技术体系(LNGSCYTX-13/14-3);; 辽宁省中央引导地方科技发展专项—地方科技创新项目示范(2016-2018)

作者(Author): 李宏建;王宏;于年文;张秀美;里程辉;宋哲;

Email:

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