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氮、磷、镁肥对甜菜蔗糖磷酸合成酶活性的调控

发表时间:2009-08-31  浏览量:1424  下载量:637
全部作者: 陈志英,马凤鸣
作者单位: 东北农业大学经济管理学院;东北农业大学经济管理学院
摘 要: 利用框栽试验,采用二次正交旋转组合设计,研究了硝态氮、铵态氮、镁肥和磷肥对甜菜块根和叶片蔗糖磷酸合成酶活性(the activity of the sucrose phosphate synthase,SPSA)的影响。目的是为甜菜生产获得较高的含糖率,进而为提高经济效益提供指导。研究表明:各单因子对在块根增长期和增长末期的块根SPSA、及在叶丛形成期和糖分积累期的叶片SPSA影响显著,减少氮肥和镁肥的施用量能够促进甜菜生育后期块根糖代谢水平的提高;两因子互作对块根增长期和增长末期块根SPSA及叶丛形成期和糖分积累期叶片SPSA的影响显著;在生育后期低氮量、高铵态氮和高镁肥互作,有利于块根SPSA的提高和叶片SPSA的降低;而叶丛形成期,低氮量、低硝态氮和高镁肥互作有利于叶片SPSA的提高。4个处理因子对甜菜不同生育时期块根和叶片的SPSA贡献率不同。同时得到SPSA最高时各处理因子的组合。
关 键 词: 作物生理学;蔗糖磷酸合成酶活性;二次正交旋转组合设计;甜菜;氮;磷;镁
Title: Regulation of nitrogen, phosphorous and magnesium on SPSA of sugar beet
Author: CHEN Zhiying, MA Fengming
Organization: College of Economics and Management, Northeast Agricultural University;College of Agriculture, Northeast Agricultural University
Abstract: In pool culture experiments, the quadratic rotation-orthogonal combination design was adopted to study the regulation of four experimental factors, namely NO3-—N, NH4+—N, MgO and P2O5 on SPSA (the activity of the sucrose phosphate synthase) of roots and leaves of sugar beet, in order to supply guidance for obtaining higher sugar content in sugar beet producing and then enhancing economic performance. The results showed that at the root growth stage and the end stage of root growth every single factor was related significantly with SPSA of roots, and in the foliage formation period and the sugar accumulation period there were significantly correlations between single factor and SPSA of leaves. Decreasing the amounts of nitrogen and magnesium made the level of sugar metabolism in roots of later stage increase. At the root growth stage and the end stage of root growth the interactions of these two factors were related significantly with SPSA of roots, and in the foliage formation period and the sugar accumulation period there were significantly correlations between the interactions of these two factors and SPSA of leaves. At the later stage of growth and formation, lower amount of nitrogen and the interaction of higher NH4+—N and MgO made SPSA of roots increase and SPSA of leaves decrease, but in the foliage formation period, lower nitrogen and the interaction of lower NO3-—N and higher MgO made SPSA of leaves increase. And the contribution rates of four factors to the SPSA of roots and leaves at different growth and formation stage were different. The different treatment combinations at the highest SPSA of sugar beet when the effects of four factors were outstanding were also obtained.
Key words: crop physiology; the activity of the sucrose phosphate synthase; the quadratic rotation-orthogonal combination design; sugar beet; nitrogen; phosphorus; magnesium
发表期数: 2009年8月第16期
引用格式: 陈志英,马凤鸣. 氮、磷、镁肥对甜菜蔗糖磷酸合成酶活性的调控[J]. 中国科技论文在线精品论文,2009,2(16):1653-1663.
 
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