段云峰;冷平生;苏淑钗;谢锡文;于菲;

• 1:北京农学院园林系
• 2:北京林业大学林学院
• 3:甘肃省甘谷县为民农场

摘要(Abstract)：

对引自美国、以色列和伊朗的3个阿月浑子品种的成年树在生长过程中的叶片营养元素(N、P、K、Ca、Mg、Mn、Cu、Fe)质量分数进行测定分析,结果表明,3个阿月浑子品种叶片矿质营养元素质量分数季节变化规律一致,从5月到9月,随叶龄的增加,N质量分数逐渐下降,Ca、Mg、Mn、K质量分数逐渐递增,其中Ca增加3倍,最为明显,而P、Cu、Fe质量分数变化不显著;7月中下旬营养元素质量分数相对稳定,为阿月浑子营养诊断的最佳采样时期;试验地总盐量在0～20cm和20～40cm土层分别为666.6mg·kg-1和900mg·kg-1,为强碱性土壤,导致阿月浑子P、Fe亏缺,叶片缺素症状明显,由于灌溉水含盐量高达2670mg·kg-1,到坚果成熟期部分叶片盐害症状明显,叶片中的Cu质量分数相对较高,但未发现明显的Cu害症状;阿月浑子叶片各营养元素质量分数的相关分析表明,不同元素间存在一定的相关性,其中N和Ca质量分数存在极显著的负相关关系,Mg和Cu质量分数存在极显著的正相关关系。

关键词(KeyWords)： 阿月浑子;矿质元素;叶分析;生长期

Abstract:

Keywords:

基金项目(Foundation): 国家林业局“948”项目(96-4-71-02);; 北京市自然科学基金(6072005);; 北京市创新人才建设计划(PXM2009-014207-076874)

作者(Author): 段云峰;冷平生;苏淑钗;谢锡文;于菲;

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