土壤紧实度对生姜植株衰老的影响

被引：25

作者：

尚庆文

孔祥波

王玉霞

徐坤

机构：

[1] 山东农业大学园艺科学与工程学院作物生物学国家重点实验室

来源：

应用生态学报 | 2008年 / 04期

关键词：

生姜; 土壤紧实度; 衰老; 生理特性;

D O I：

10.13287/j.1001-9332.2008.0210

中图分类号：

S632.5 [姜];

学科分类号：

摘要：

通过测定不同容重土壤中生长的生姜植株的主要生理特性,研究了土壤紧实度与生姜植株衰老的关系.结果表明:随土壤紧实度增大,生姜根系活力降低,叶片硝酸还原酶活性及叶绿素含量下降,光合作用减弱,叶片的电解质渗漏率及MDA含量升高.在生长前期,叶片SOD、POD及CAT活性随土壤紧实度的增加而降低,后期则相反.生姜旺盛生长期,土壤容重为1.20和1.49 g.cm-3的植株根系活力分别为37.3和28.5μg.g-1FM.h-1,后者较前者降低30.9%,叶片叶绿素含量及光合速率分别降低19.0%和17.9%,而叶片电解质渗漏率及MDA含量则分别提高57.2%和26.3%,表明紧实土壤加速了生姜植株的衰老.

引用

页码：782 / 786

页数：5

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