干旱区生态环境知识资源中心(Arid): 不同水肥条件下新老两个春小麦品种相对竞争能力的逆转

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	不同水肥条件下新老两个春小麦品种相对竞争能力的逆转
其他题名	Relative competitiveness of old vs. modern variety of spring wheat reverse under different soil water and fertilizer conditions
	杜京旗; 高平; 张巧仙; 张荣
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2015
卷号	51 期号:5 页码:730-736
中文摘要	大田实验采用生态学中的de Wit替代系列法，研究不同水肥条件下地方春小麦品种和尚头和新育成的春小麦品种定西-24混播时的相对竞争能力与其单播经济产量之间的相关性，以及混播条件下二者的竞争结果.结果表明：在雨养、中水中肥、高水高肥处理中，和尚头和定西-24的相对竞争能力与其单播经济产量之间的关系分别为负相关、负相关和无特定相关.雨养条件下，和尚头可以从较深土层吸收较多的储藏水分，中水中肥与高水高肥条件下，定西-24吸收水分的能力强于和尚头的.和尚头和定西-24的根量变化趋势一致：随着土壤深度的增加而减小.混播时，雨养条件下和尚头的相对竞争能力强于定西-24的，中水中肥条件下，和尚头的相对竞争能力弱于定西-24的，表明和尚头对定西-24的相对竞争能力发生了逆转.剔除由竞争能力导致的根系冗余，有望成为半干旱地区小麦育种的一个目标.
英文摘要	The method of de Wit series substitute field experiment was used to study the relationship between the relative competitiveness in mixture and productive performance in monoculture, and the competitive outcome of old spring wheat variety Heshangtou vs. modern spring wheat variety Dingxi-24 under a series of soil water and fertilizer conditions. Our field experimental results showed that under adequate rainy treatment, moderate soil water and fertilizer applications, and sufficient soil water and fertilizer application, the relationships between the relative competitiveness and productive performance of the two cultivars were negative, negative and neutral, respectively. Under rainy condition, Heshangtou could absorb more storage of soil water from a deeper soil layer, while with the moderate and sufficient soil water and fertilizer application, the ability of absorbing moisture of Dingxi-24 was stronger than that of Heshangtou. With the increase of soil depth, the root biomass of both Heshangtou and Dingxi-24 showed a gradually decreasing trend. Under the severe drought stress condition, Heshangtou exhibited a greater relative competitive advantage than Dingxi-24. With moderate soil water and intermediate fertilizer application, the relative competitive ability of Heshangtou was weaker than that Dingxi-24. Our field experimental results suggested that the relative competitiveness between the old spring wheat variety Heshengtou and modern wheat variety Dingxi-24 was reversed. The removal of root redundancy caused by the competition is expected to become a target for wheat breeding in a semiarid area.
中文关键词	春小麦品种 ; 水肥条件 ; 相对竞争能力 ; 经济产量 ; 逆转
英文关键词	spring wheat variety soil water and fertilizer application condition relative competitive ability productive performance reverse
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:5566852
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378847
作者单位	杜京旗, 吕梁学院生命科学系, 吕梁, 山西 033000, 中国.; 高平, 吕梁学院生命科学系, 吕梁, 山西 033000, 中国.; 张巧仙, 吕梁学院生命科学系, 吕梁, 山西 033000, 中国.; 张荣, 兰州大学生命科学学院, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	杜京旗,高平,张巧仙,等. 不同水肥条件下新老两个春小麦品种相对竞争能力的逆转[J],2015,51(5):730-736.
APA	杜京旗,高平,张巧仙,&张荣.(2015).不同水肥条件下新老两个春小麦品种相对竞争能力的逆转.兰州大学学报. 自然科学版,51(5),730-736.
MLA	杜京旗,et al."不同水肥条件下新老两个春小麦品种相对竞争能力的逆转".兰州大学学报. 自然科学版 51.5(2015):730-736.