干旱区生态环境知识资源中心(Arid): 干旱区玉米滴灌需水规律的田间试验研究

Arid

	干旱区玉米滴灌需水规律的田间试验研究
其他题名	Water Requirements of Drip Irrigated Maize in Arid Regions
	李久生 1; 饶敏杰 2; 张建君 3
来源期刊	灌溉排水学报
ISSN	1672-3317
出版年	2003
卷号	22 期号:1 页码:16-21
中文摘要	在内蒙古干旱区的一种砂土及砂质壤土上，对玉米滴灌需水规律进行了田间试验研究。试验设置高灌水定额(30～40 mm)、中灌水定额(20～30 mm)和低灌水定额(15～25 mm)3个处理，灌水周期相同，在需水高峰期为3 d，其它时间为4～7d。试验结果表明，中灌水定额处理的株高、叶面积和产量均明显高于低灌水定额处理，而高灌水定额与低灌水定额处理之间差异很小。因此对所研究土壤来说，建议采用灌水定额20～30 mm，灌水周期3～5d的灌溉制度。这种情况下，玉米生育期需水量为466mm(生育期有效降雨101．1mm)。对滴灌玉米作物系数的计算方法进行比较后发现，双作物系数法可以较好地描述灌水或降雨后地表蒸发对作物腾发的影响；在作物生育中期，分段单值平均法、双作物系数法的计算结果与实测值吻合良好。
英文摘要	Field experiments were conducted to investigate water requirements of drip-irrigated maize in Inner Mongolia, an arid region. Three treatments, refereed to as high, medium, and low irrigation amount treatments, were used. Irrigation frequency was 3 days in the peak period of water requirements, but 4 to 7 days in the other growing stages for all the treatments tested. The results demonstrated that the medium irrigation amount treatment produced a considerably higher plant height, leaf area index (LAI), and grain yield than the low irrigation amount treatment, but no significant difference between medium and high irrigation amount treatments was observed. An irrigation amount of 20 to 30 mm for an irrigation event with a frequency of 3 to 5 days was recommended for drip-irrigated maize in arid regions from this study. Water requirement under such a regime was 466 mm, including 101 mm of precipitation. Crop coefficients were estimated using the single coefficient and dual coefficient approaches and compared to the observed results. It was found that dual coefficient approach could well descript the evaporation from the soil surface following an irrigation or rainfall event. The crop coefficients during the mid - season stage estimated by single crop coefficient and dual crop coefficient approaches compared well with the observed results.
中文关键词	干旱区 ; 滴灌 ; 玉米 ; 耗水量 ; 作物系数
英文关键词	arid regions drip irrigation maize crop water consumption crop coefficient
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:1484291
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204138
作者单位	1.国家节水灌溉北京工程技术研究中心, 北京 100044, 中国; 2.中国农业科学院农业气象研究所, 北京 100044, 中国; 3.中国农业科学院土壤肥料研究所, 北京 100044, 中国
推荐引用方式 GB/T 7714	李久生,饶敏杰,张建君. 干旱区玉米滴灌需水规律的田间试验研究[J],2003,22(1):16-21.
APA	李久生,饶敏杰,&张建君.(2003).干旱区玉米滴灌需水规律的田间试验研究.灌溉排水学报,22(1),16-21.
MLA	李久生,et al."干旱区玉米滴灌需水规律的田间试验研究".灌溉排水学报 22.1(2003):16-21.