陈磊;伍涛;张绍铃;姚改芳;陶书田;贾兵;苗永春;曹慧莲;

• 1:南京农业大学梨工程技术研究中心
• 2:江苏省睢宁县林牧渔业局

摘要(Abstract)：

研究不同施氮量对丰水梨果实品质形成及叶片生理特征的影响,结果表明,丰水梨果实发育过程中以积累果糖和蔗糖为主,葡萄糖和山梨醇含量较低;适量施氮能提高果实可溶性总糖的含量,而过量施氮降低果糖和葡萄糖含量,从而降低可溶性糖总糖含量;适量施氮可提高叶片叶绿素a、叶绿素b、类胡萝卜素含量以及可溶性蛋白质含量,叶片光合指标净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)和气孔限制值(Ls)显著升高,胞间CO2浓度(Ci)下降,有利于叶片光合碳同化能力的增强和果实品质的形成;黄河故道地区沙土栽培的盛果期丰水梨园,果实膨大期纯氮施用量以每666.7m216.8kg为宜。

关键词(KeyWords)： 丰水梨;氮;果实品质;生理特性

Abstract:

Keywords:

基金项目(Foundation): 国家公益性行业科技专项(3-38)

作者(Author): 陈磊;伍涛;张绍铃;姚改芳;陶书田;贾兵;苗永春;曹慧莲;

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