干旱区生态环境知识资源中心(Arid): 播期对春小麦生长发育及产量的影响

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	播期对春小麦生长发育及产量的影响
其他题名	Effects of sowing date on the growth and yield of spring wheat
	张凯 1; 李巧珍 2; 王润元 3; 郭林 2; 雷俊 2; 王艳斌 2; 王鹤龄 3
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2012
卷号	31 期号:2 页码:324-331
中文摘要	为了给陇中半干旱区春小麦高产栽培提供依据,2010年在甘肃定西进行了春小麦分期播种试验,并对不同播期条件下春小麦生长发育及产量形成进行了分析。结果表明:随着播期的推迟,春小麦播种-抽穗期日数减少、全生育期明显缩短;5月下旬之前,越早播种的春小麦LAI越大,5月下旬之后,播种愈晚春小麦LAI越大。早播春小麦LAI峰值靠前,晚播峰值滞后;6月下旬之前,播期早的春小麦叶绿素含量高于播期晚的,6月下旬之后播期愈早叶绿素含量下降愈快;不同播期春小麦群体生长率和净同化率在孕穗-抽穗期后差异显著,表现为3月18日播期最大,4月7日播期最小。各播期干物质累积在拔节期后表现为快速递增趋势。在拔节期前,早播处理的干物质积累速率较慢。随着播期的推迟,单株干物质最大积累速率出现时间提前,籽粒最大灌浆速率出现时间推迟,千粒重表现为先升后降;灌浆3个阶段各参数受播期影响比较显著;早播春小麦产量最高。
英文摘要	In order to provide basis for high-yielding cultivation of spring wheat in semi-arid region, a field experiment was carried out in Dingxi of Gansu Province, Northwest China in 2010 to study the effects of different sowing dates (March 8, March 18, March 28, and April 7) on the growth and development and yield formation of spring wheat. With the delay of sowing date, the days from sowing to heading stage shortened, resulting in an evident shortening of the whole growth period. Before late May, the earlier the sowing, the larger the leaf area index (LAI) was; after late May, the later the sowing, the larger the LAI. Early sowing made the peak of LAI advanced, while late sowing postponed the peak of LAI. Before late June, the earlier the sowing, the higher the chlorophyll content was; after late June, the earlier the sowing, the faster the decline of chlorophyll content. The population growth rate and net assimilation rate after heading stage had significant differences among different sowing dates, being the highest when the sowing date was March 18 and the lowest when the sowing date was April 7. Whatever the sowing date, the dry matter accumulation of wheat plants increased rapidly at jointing stage. Early sowing made the dry matter accumulation before jointing stage slower. With the delay of sowing date, the dates with the peak values of dry matter accumulation rate advanced, those with the peak values of grain filling rate postponed, and the 1000-kernel weight decreased after an initial increase. Sowing date had significant effects on the grain parameters at three grain filling phases. The grain yield differed significantly with sowing dates, being the highest when the sowing date was March 8.
中文关键词	春小麦 ; 播期 ; 生长发育 ; 产量
英文关键词	spring wheat sowing date growth and development yield
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4446543
来源机构	中国科学院西北生态环境资源研究院 ; 中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228495
作者单位	1.中国科学院寒区旱区环境与工程研究所, 中国科学院甘肃省干旱气候变化与减灾重点实验室;;中国气象局干旱气候变化与减灾重点开放实验室, 兰州, 甘肃 730000, 中国; 2.甘肃省定西市气象局, 定西, 甘肃 743000, 中国; 3.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室;;中国气象局干旱气候变化与减灾重点开放实验室, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	张凯,李巧珍,王润元,等. 播期对春小麦生长发育及产量的影响[J]. 中国科学院西北生态环境资源研究院, 中国气象局兰州干旱气象研究所,2012,31(2):324-331.
APA	张凯.,李巧珍.,王润元.,郭林.,雷俊.,...&王鹤龄.(2012).播期对春小麦生长发育及产量的影响.生态学杂志,31(2),324-331.
MLA	张凯,et al."播期对春小麦生长发育及产量的影响".生态学杂志 31.2(2012):324-331.