干旱区生态环境知识资源中心(Arid): 干旱胁迫下钠复合肥对霸王(Zygophyllum xanthoxylum)根系生长的促进作用

Arid

	干旱胁迫下钠复合肥对霸王(Zygophyllum xanthoxylum)根系生长的促进作用
其他题名	A Sodium Compound Fertilizer Promotes Root Growth in Zygophyllum xanthoxylumunder Drought Stress
	王春梅; 夏曾润; 张金林; 包爱科; 周向睿; 岳利军; 王锁民
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2014
卷号	34 期号:2 页码:405-412
中文摘要	霸王(Zygophyllum xanthoxylum)是荒漠区广为分布的一种多浆旱生植物。采用盆栽育苗的方法,初步评价了干旱胁迫下Na~+ 对霸王根系生长的贡献,探讨了一种新型钠复合肥对霸王根系形态、生理学指标的影响。结果显示,钠复合肥能显著促进霸王根系的生长并提高其抗旱性:(1)正常浇水时,钠复合肥对霸王的促进作用主要体现在株高的增加和侧根的增长上,根系活力显著增强;(2)自然干旱15d后,钠复合肥使得霸王根系活跃吸收面积显著提高24%,促进主根的加粗和伸长以吸收更多的水分和矿质养分;(3)干旱胁迫下,钠复合肥处理使霸王根部Na~+ 浓度保持较高水平,K~+ 浓度下降42%。因此认为,干旱前钠复合肥显著促进了霸王侧根的生长和根系活力的提高,干旱后钠复合肥通过促进根系活跃吸收面积的扩大和主根的生长以提高霸王的抗旱性,其主要原因是根和叶中积累了较多的Na~+、而非K~+。
英文摘要	Zygophyllum xanthoxylumis a succulent xerophyte that widely lives in desert area.The effects of a newly invented sodium compound fertilizer on both morphological and physiological indices relevant to root growth were investigated in pots experiments in order to evaluate the contribution of Na~+ to root growth of Z.xanthoxylum under drought stress.The results indicated that the sodium compound fertilizer significantly enhanced root growth as well as drought resistance of Z.xanthoxylum:(1)The sodium compound fertilizer mainly improved plant height,promoted the growth of lateral roots and enhanced root activity significantly under well irrigated condition;(2)The sodium compound fertilizer significantly improved root active absorbent area by 24% and increased taproot diameter and elongation to uptake sufficient water and mineral nutrition after 15 days’drought treatment;(3)Ion analysis showed that Na~+ concentration in roots of Z.xanthoxylum under drought stress was maintained at a high level,however,K~+ concentration decreased by 42% by the sodium compound fertilizer.Therefore,it is proposed that Na~+ could significantly improve lateral root growth and root activity under well irrigated condition,whereas,enhance root active absorbent area and taproot growth to improve the drought tolerance of Z.xanthoxylum under water stress,which was mainly caused by the higher accumulation of Na+,not K~+,in roots and leaves of Z.xanthoxylum.
中文关键词	钠复合肥 ; 霸王(Zygophyllum xanthoxylum) ; 主根 ; 根系活力 ; 抗旱性
英文关键词	sodium compound fertilizer Zygophyllum xanthoxylum taproot root activity drought tolerance
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5102080
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232165
作者单位	兰州大学草地农业科技学院, 草地农业生态系统国家重点实验室, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	王春梅,夏曾润,张金林,等. 干旱胁迫下钠复合肥对霸王(Zygophyllum xanthoxylum)根系生长的促进作用[J]. 兰州大学,2014,34(2):405-412.
APA	王春梅.,夏曾润.,张金林.,包爱科.,周向睿.,...&王锁民.(2014).干旱胁迫下钠复合肥对霸王(Zygophyllum xanthoxylum)根系生长的促进作用.中国沙漠,34(2),405-412.
MLA	王春梅,et al."干旱胁迫下钠复合肥对霸王(Zygophyllum xanthoxylum)根系生长的促进作用".中国沙漠 34.2(2014):405-412.