干旱区生态环境知识资源中心(Arid): 干旱胁迫下外源钙对矿区玉米生长的影响

Arid

	干旱胁迫下外源钙对矿区玉米生长的影响
其他题名	Influence of exogenous calcium on the growth of maize under arid-stress in mine area
	李少朋 1; 毕银丽 1; 陈昢圳 2; 刘生 1; 张姣 1; 周建 1; 高菲 1
来源期刊	中国矿业大学学报. 自然科学版
ISSN	1000-1964
出版年	2013
卷号	42 期号:3 页码:477-482
中文摘要	通过盆栽模拟试验,以玉米为供试植物,矿区退化土壤为供试基质,对盆栽玉米分别施加不同浓度的CaCl_2(5,10,20,40,80mmol/L),研究了干旱胁迫下外源钙对矿区玉米生长和养分吸收的影响.结果表明:对矿区退化土壤上生长的玉米施加适当含量的外源钙,可显著提高玉米对养分的吸收,有利于玉米的生长.当施入CaCl_2浓度小于20mmol/L时,玉米氮磷钾累积量随外源钙含量的增加而增加,且用浓度为20mmol/L的CaCl_2处理显著提高了苗期玉米的生物量、叶片相对含水量和叶片叶色值(SPAD),玉米地上部分和根系部分氮磷钾累积量与其它处理差异性显著;当施入CaCl_2浓度大于40mmol/L时,玉米氮磷钾累积量随着外源钙含量增加而降低;用浓度为80mmol/L的CaCl_2处理抑制了玉米的生长,高含量的钙破坏了玉米离子动态平衡,对苗期玉米生长产生危害.
英文摘要	Experiment was simulated which maize was planted in degraded potting soil, setting treatments of CaCl_2 applied at five levels (5, 10, 20, 40, 80 mmol/L), to investigate the effects of exogenous calcium on maize growth and nutrition uptake in mine area under arid-stress. The results show that fertilizing proper exogenous calcium concentration can significantly improve nutrient absorption, and be beneficial to maize growth in degraded soil of mine area. When the concentration of CaCl_2 fertilized is less than 20 mmol/L, cumulated amounts of nitrogen, phosphorus and potassium in maize increase with an increase of exogenous calcium levels. Using CaCl_2 with 20 mmol/L can significantly improve the biomass, relative water content and SPAD of the maize seedling; N and P cumulated amounts in aerial parts and root parts of maize have significantly differences compared with other treatments. When the concentration of CaCl_2 fertilized is equal or greater than 40 mmol/L, the concentrations of N and P decrease with the rising of exogenous calcium levels. However, higher exogenous calcium concentration damages the maize ion dynamic equilibrium, and causes harm to the growth of maize seeding when fertilizing CaCl_2 with 80 mmol/L.
中文关键词	外源钙 ; 干旱胁迫 ; 煤矿区 ; 玉米
英文关键词	exogenous calcium arid-stress coal mining area maize
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4843671
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230496
作者单位	1.中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083, 中国; 2.中国农业大学资源与环境学院, 北京 100193, 中国
推荐引用方式 GB/T 7714	李少朋,毕银丽,陈昢圳,等. 干旱胁迫下外源钙对矿区玉米生长的影响[J]. 中国农业大学,2013,42(3):477-482.
APA	李少朋.,毕银丽.,陈昢圳.,刘生.,张姣.,...&高菲.(2013).干旱胁迫下外源钙对矿区玉米生长的影响.中国矿业大学学报. 自然科学版,42(3),477-482.
MLA	李少朋,et al."干旱胁迫下外源钙对矿区玉米生长的影响".中国矿业大学学报. 自然科学版 42.3(2013):477-482.