干旱区生态环境知识资源中心(Arid): 宁南山区不同玉米生长及产量对密度的响应

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	宁南山区不同玉米生长及产量对密度的响应
其他题名	Different Maize Varieties Growth and Yield to Density Response in Southern Mountain Area of Ningxia
	慕瑞瑞; 梁熠; 王乐; 张晓丽; 康建宏
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2019
卷号	32 期号:2 页码:267-272
中文摘要	【目的】为进一步明确宁夏南部黄土高原沟壑区旱地春玉米合理密植增产机理,为干旱半干旱地区玉米高产栽培提供理论与技术支持.【方法】本试验采用随机区组设计的方法,以当地大规模种植的2个玉米品种大丰30和先玉698为试材,设置5个密度梯度,研究种植密度对玉米品种植株的主要农艺性状、干物质积累、产量及产量相关性状等方面的影响.【结果】随着密度的增大,不同玉米品种的植株株高和穗位高逐渐增加.干物质积累随着生育期的推进在逐渐增加,在成熟期2个品种的干物质积累达到了最大值.群体叶面积指数随密度的增大逐渐增加.叶绿素相对含量随着密度的增加呈逐渐下降的趋势.2个品种随着密度的增加穗重、穗粗、行粒数、穗粒重、百粒重、产量等先增加后减小,秃尖率均先减小后增大,2个品种均在6.75万株/hm~2时产量达到最高,比在5.25万株/hm~2时产量增加了73.39 %、36.26 %.【结论】在本试验条件下,大丰30和先玉698的适宜密度是6.75万株/hm~2.
英文摘要	【Objective】This study aimed to further clarify the mechanism of reasonable dense planting and yield increase of spring maize in dryland of the Loess Plateau in southern Ningxia and provide theoretical and technical support for high-yielding cultivation of maize in arid and semi-arid regions.【Method】In this experiment,a randomized block design method was used,two large-scale maize varieties,Dafeng 30 and Xianyu 698 were used as the test materials,and five density gradients were set to study the planting density of the major agronomic traits of the maize cultivars,including traits,dry matter accumulation,yield and yield-related traits,etc.【Result】With the increase of the density, plant height and ear height of different maize varieties gradually increased. Dry matter accumulation gradually increased with the advancement of the growing period,and the dry matter accumulation of the two varieties reached a maximum at the ripening stage. The leaf area index of the population increases gradually with the increase of the density. The relative chlorophyll content gradually decreased with the increase of the density. With the increase of the density,the ear weight,ear diameter,grain number per row,grain weight per ear,grain weight per hectare,yield of the two varieties increased first and then decreased,and the baldness rate decreased first and then increased. Both varieties were at the output of 67 500 plants /hm~2,the highest yield was achieved,which was an increase of 73.39 % and 36.26 % over the 52 500 plants /hm~2.【Conclusion】Under the conditions of this experiment,the suitable density of Dafeng 30 and Xianyu 698 was 67 500 plants /hm~2.
中文关键词	玉米 ; 种植密度 ; 品种 ; 产量 ; 生长发育
英文关键词	Maize Planting densities Variety Yield Growth and development
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:6457543
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239624
作者单位	慕瑞瑞, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 梁熠, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 王乐, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 张晓丽, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 康建宏, 宁夏大学农学院, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	慕瑞瑞,梁熠,王乐,等. 宁南山区不同玉米生长及产量对密度的响应[J]. 宁夏大学,2019,32(2):267-272.
APA	慕瑞瑞,梁熠,王乐,张晓丽,&康建宏.(2019).宁南山区不同玉米生长及产量对密度的响应.西南农业学报,32(2),267-272.
MLA	慕瑞瑞,et al."宁南山区不同玉米生长及产量对密度的响应".西南农业学报 32.2(2019):267-272.