干旱区生态环境知识资源中心(Arid): 辽西半干旱区玉米单生育期受旱和连旱对生长和产量的影响

Arid

	辽西半干旱区玉米单生育期受旱和连旱对生长和产量的影响
其他题名	Effects of Short Time and Continuous Drought Stress on Growth and Yield of Maize in Semi-Arid Area of Western Liaoning
	窦超银 1; 于景春 2; 于秀琴 2
来源期刊	吉林农业科学
ISSN	1003-8701
出版年	2014
卷号	39 期号:3 页码:18-21,58
中文摘要	辽西地区干旱缺水，为了保障粮食生产和提高旱情抵御能力，将有限的灌溉水资源合理利用，本文研究了玉米单生育期受旱和连旱对玉米生长、产量和水分利用效率等的影响。结果表明，各生育期单旱连旱均不利于玉米生长和产量形成；连旱使作物生长受抑加重，减产加剧，最大减产达到42.6%；苗期、拔节期和抽穗期玉米生长和最终产量较容易受干旱影响，而灌浆期受旱影响相对较小；各处理水分利用效率(WUE)在2.2 ~ 3.23 kg·m~(-3)之间变化，由大到小顺序为苗期拔节期连旱 > 对照 > 灌浆期单旱 > 拔节抽穗期连旱苗期单旱>抽穗灌浆期连旱>拔节期单旱>抽穗期单旱，拔节和抽穗期受旱将导致WUE下降，连旱有利于提高WUE,但不利于保障粮食生产。因此，综合考虑粮食生产和水分利用效率，当灌溉水资源匮乏时，可在灌浆期适度水分控制灌溉。
英文摘要	Drought stress and water deficiency is the status quo in western arid region of Liaoning province. To provide theoretical basis for reasonable irrigation, effects of short time and continuous drought stress on the growth, yield and water use efficiency of maize were studied with ’Danyu 77’ as the test material under controlled irrigation. The results showed that the growth and yield of maize were restrained by drought stress, and the situation was the worst in continuous drought stress, in which the maximum reduction of yield reached 42.6%. Seedling stage, elongation stage and heading stage of plant growth were susceptible to drought stress, while during the grain filling stage, the adverse effects were not significant. Water use efficiency of the treatments ranged from 2.2 to 3.23 kg·m~(-3), and in following order: continuous drought from seedling to elongation stage > ck > drought in grain filling stage > continuous drought from elongation to heading stage = seedling stage drought > continuous drought from heading to grain filling stage > elongation stage drought > heading stage drought. WUE decreased as drought stress happened during elongation stage to heading stage. Though WUE increased in continuous drought stress, but crop production reduced substantially. When the water resource is scarce for irrigation in the research area, for balancing food production and WUE, appropriate drought stress in grain filling stage is recommended.
中文关键词	辽西半干旱区 ; 干旱胁迫 ; 产量 ; 水分利用效率
英文关键词	Semi-arid area of western Liaoning Drought stress Yield Water use efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:5176969
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231381
作者单位	1.辽宁省水利水电科学研究院, 沈阳, 辽宁 110003, 中国; 2.辽宁省建平县灌溉试验站, 建平, 辽宁 122405, 中国
推荐引用方式 GB/T 7714	窦超银,于景春,于秀琴. 辽西半干旱区玉米单生育期受旱和连旱对生长和产量的影响[J],2014,39(3):18-21,58.
APA	窦超银,于景春,&于秀琴.(2014).辽西半干旱区玉米单生育期受旱和连旱对生长和产量的影响.吉林农业科学,39(3),18-21,58.
MLA	窦超银,et al."辽西半干旱区玉米单生育期受旱和连旱对生长和产量的影响".吉林农业科学 39.3(2014):18-21,58.