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。
[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.
出处
《安徽农业科学》
CAS
北大核心
2011年第23期14018-14020,共3页
Journal of Anhui Agricultural Sciences
关键词
桃
施氮水平
可溶性糖
淀粉
根内部组织构造
Peach
Nitrogen levels
Soluble sugar
Starch
Root tissue structure
