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氮肥不同施用量对葡萄叶片生长及根、叶细胞结构的影响

DOI: 10.7668/hbnxb.2008.03.048, PP. 204-208

Keywords: 葡萄,氮肥,叶片,

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Abstract:

旨在为葡萄生产栽培提供理论依据,通过氮肥不同施用量处理,研究探讨了氮肥对盆栽葡萄叶片生长及根、叶细胞结构的影响。结果表明,随着氮肥施用量的增加,葡萄叶片的长和宽及其叶面积都呈现增大趋势,叶绿素含量也显著增加,其中,叶绿素a增加显著,而叶绿素b增加不显著,同时,叶绿素荧光量子吸收率显著增加,且与叶绿素a/b值显现出一致的趋势,说明叶绿素俘获光量子与叶绿素a有很大关系。通过切片观察,随着氮肥施用量的增加,DAPI染色后,对叶片细胞核影响不显著,但在根尖部,细胞核数量和染色程度显著增加;经I2-KI染色显示,随着氮肥施用量的增加,葡萄叶片、根尖中淀粉粒积累也呈现增加的趋势。

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