干旱区生态环境知识资源中心(Arid): 内蒙古西部荒漠区膜下滴灌灌水定额对机采棉根系生长及产量的影响

Arid

	内蒙古西部荒漠区膜下滴灌灌水定额对机采棉根系生长及产量的影响
其他题名	Effects of Irrigation Amount on Root Growth and Yield of Mechanical-harvesting Cotton under Mulched Drip Irrigation in Inner Mongolia West Desert Area
	李勇; 王峰; 孙景生; 张俊鹏; 孙池涛; 张昊; 龚雪文
来源期刊	灌溉排水学报
ISSN	1672-3317
出版年	2015
卷号	34 期号:11 页码:18-23
中文摘要	通过大田试验,研究了不同灌溉定额(低水分处理W_1:216 mm、中水分处理W_2:288 mm、高水分处理W_3:360 mm)对机采棉根系分布、耗水及产量的影响。结果表明,根质量密度随土层深度增加而降低,而根长密度则先增加后降低。低水分(W_1)处理促进各层根系生长,根长密度以30~40 cm 土层最大,中高水分(W_2、W_3)处理以20~30 cm最大。棉花耗水量与灌水量呈正比,花铃期耗水量最高,各处理耗水差异主要集中在花铃期与吐絮期。高水分(W_3)处理籽棉产量最高,较低水分(W_1)与中水分(W_2)处理分别增加29.3%与25.6%;单株成铃数以高水分(W_3)处理最高,中水分(W_2)处理单铃质量最大,单株成铃数较高是高水分(W_3)处理籽棉产量最高的主要因素。综合分析后认为,尽管根系分布对水分利用效率有一定影响,但各处理耗水与产量差异主要由土壤水分状况决定, 在本试验条件下灌溉量360 mm处理可实现高产与高效的统一。
英文摘要	In order to explore the optimal irrigation model of mechanical-harvesting cotton with drip irrigation under film in the Inner Mongolia west desert area,an experiment with different amounts of drip irrigation(W_1:216 mm,W_2:288 mm,W_3:360 mm)was conducted in the field.The effects on cotton root distribution, water consumption and yield were studied.Results showed that cotton root mass density gradually increased with the increase of soil depth,and the root-length density increased firstly and decreased afterwards. Root growth were greatly promoted under lower water amount irrigation(W_1)in every soil layers, and the maximum root length density appeared in 30~40 cm soil depth,but for the other two treatments, the maximum were found in 20~30 cm soil layer.Crop evapotranspiration(ET_c)was indirectly proportional to irrigation amount,the highest water consumption appeared in the blooming period,and the differences of water consumption mainly concentrated in blooming and boll opening stages.Seed cotton yield of the highest irrigation amount(W_3)treatment increased by 29.3%and 25.6%respectively compared with the other treatments;and it also had the highest number of bolls per plant.However,the boll weight of medium water amount(W_2)treatment was the highest.The boll number per plant was the main factor for harvest seed cotton yield.Although root distribution had some impacts on WUE,the differences of water consumption and cotton yield were mainly determined by soil moisture conditions.In short,360 mm irrigation amount seemingly was the optimal drip irrigation scheduling in terms of seed cotton yield and water use efficiency.
中文关键词	膜下滴灌 ; 机采棉 ; 根系分布 ; 耗水 ; 籽棉产量
英文关键词	drip irrigation under film mechanical-harvesting cotton root distribution water consumption seed cotton yield
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:5582450
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232853
作者单位	中国农业科学院农田灌溉研究所, 农业部作物需水与调控重点开放实验室, 新乡, 河南 453002, 中国
推荐引用方式 GB/T 7714	李勇,王峰,孙景生,等. 内蒙古西部荒漠区膜下滴灌灌水定额对机采棉根系生长及产量的影响[J],2015,34(11):18-23.
APA	李勇.,王峰.,孙景生.,张俊鹏.,孙池涛.,...&龚雪文.(2015).内蒙古西部荒漠区膜下滴灌灌水定额对机采棉根系生长及产量的影响.灌溉排水学报,34(11),18-23.
MLA	李勇,et al."内蒙古西部荒漠区膜下滴灌灌水定额对机采棉根系生长及产量的影响".灌溉排水学报 34.11(2015):18-23.