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施氮水平对实生桃树可溶性总糖、淀粉含量及根组织构造的影响
引用本文:杨正荣,王玉珍,潘春香.施氮水平对实生桃树可溶性总糖、淀粉含量及根组织构造的影响[J].安徽农业科学,2011,39(23):14018-14020.
作者姓名:杨正荣  王玉珍  潘春香
作者单位:1. 呼和浩特市赛罕区蔬菜良种场,内蒙古呼和浩特,010000
2. 韶关学院英东农业科学与工程学院,广东韶关,512005
摘    要:目的]为桃栽培生产提供理论依据。方法]以3年生实生桃树为材料,NH4NO3为试验氮肥,设0、3、6 g/盆3个施氮水平,探讨不同施氮水平对实生桃树可溶性总糖、淀粉含量以及根内部组织构造的影响。结果]根和叶片的可溶性糖含量随着施氮水平的提高呈增加趋势,以6 g/盆最高,与对照、3 g/盆区差异均达到0.05显著水平;淀粉含量却呈相反趋势,随着施氮水平的提高而呈下降趋势,以6g/盆含量最低,与对照达0.01显著水平。与对照、3 g/盆处理相比,6 g/盆处理根内部组织构造表现为维管中柱较大,维管束发达,皮层薄壁细胞间隙小,细胞圆润、饱满,细胞壁光滑,发育较好。结论]适宜的施氮水平可促进桃树可溶性总糖的累积和根内部组织的发育。

关 键 词:  施氮水平  可溶性糖  淀粉  根内部组织构造

Effects of Different Nitrogen Levels on Contents of Soluble Sugar, Starch and Root Tissue Structure of Peach Trees
Institution:YANG Zheng-rong et al(Well-bred Vgetable Farm,Saihan District,Huhhot,Inner Mongolia 010000)
Abstract:Objective]The research aimed to provide theoretical basis for the cultivation and production of peach.Method]The peach was used as the materials,and NH4NO3 was used as the experimental nitrogen fertilizer.Three nitrogen levels,0,3,6 g per pot respectively were set to study the effects of different levels of nitrogen fertilizer on the contents of soluble sugar,starch and internal structure of the root of the peaches.Result]The contents of soluble sugar of roots and leaves increased with the increase of level of nitrogen fertilizer,and the level of 6 g per pot was the highest,which showed extreme differences between the level of 3 g per pot and the control.However,starch contents showed opposite results,which decreased as the level of nitrogen fertilizer increased.Compared with the 3 g per pot level of nitrogen fertilizer and the control,the internal structure of root of 6 g per pot level had larger fibrovascularcylinder,advanced vascular bundle,small-spaced thin-walled cells,smooth and full cells with smooth cell wall.Conclusion]Appropriate nitrogen levels could accelerate the accumulation of soluble sugar and the growth of root tissue structure.
Keywords:Peach  Nitrogen levels  Soluble sugar  Starch  Root tissue structure
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