干旱区生态环境知识资源中心(Arid): Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda

Arid

DOI	10.1080/09064710.2020.1817539
	Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda
	Tuyishime, Olive; Joel, Abraham; Messing, Ingmar; Naramabuye, Francois; Sankaranarayanan, Muthiah; Wesstrom, Ingrid
通讯作者	Wesstrom, I
来源期刊	ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
ISSN	0906-4710
EISSN	1651-1913
出版年	2020
卷号	70 期号:7 页码:578-593
英文摘要	Drainage management is important in intensification of irrigated paddy rice production. This study assessed the effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a field experiment conducted during three seasons in Rwanda. The experiment comprised 12 plots with four blocks and three treatments: DS0.6(0.6 m deep drain), DD1(1.2)(1.2 m deep drain, control structure open four times per week), and DD2(1.2)(1.2 m deep drain, control structure open two times per week). Outflow was calculated from water balance. Nitrogen (N) content in drainage water was determined weekly. Crop yield and N uptake were determined in grain and straw. In all seasons, grain yield was 61-131% higher, crop N uptake was 24-90% higher, harvest index (HI) was 24-65% higher and water use efficiency (WUE) was 50-150% higher in treatments DD1(1.2)and DD2(1.2)than in DS0.6. There was a decrease in soil carbon/nitrogen ratio at the end of Seasons 2 and 3. Recirculating straw to fields is thus necessary to replenish SOC for long-term soil fertility. A practical implication of the study is that managed deep drainage systems could enhance water use efficiency and rice grain yield in poorly drained paddy fields.
英文关键词	Surface drainage paddy rice nutrient losses rice yield harvest index
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000569196700001
WOS关键词	TAIHU LAKE REGION ; LEACHING LOSSES ; WHEAT ROTATIONS ; PADDY FIELDS ; MANAGEMENT ; IRRIGATION ; BUDGETS ; POLLUTION
WOS类目	Agronomy ; Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326283
作者单位	[Tuyishime, Olive; Naramabuye, Francois] Univ Rwanda, Coll Agr Anim Sci & Vet Med, Musanze, Rwanda; [Tuyishime, Olive; Joel, Abraham; Messing, Ingmar; Wesstrom, Ingrid] Swedish Univ Agr Sci, Dept Soil & Environm, POB 7014, SE-75007 Uppsala, Sweden; [Sankaranarayanan, Muthiah] Univ Rwanda, Coll Agr Anim Sci & Vet Med, Nyagatare, Rwanda
推荐引用方式 GB/T 7714	Tuyishime, Olive,Joel, Abraham,Messing, Ingmar,et al. Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda[J],2020,70(7):578-593.
APA	Tuyishime, Olive,Joel, Abraham,Messing, Ingmar,Naramabuye, Francois,Sankaranarayanan, Muthiah,&Wesstrom, Ingrid.(2020).Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda.ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,70(7),578-593.
MLA	Tuyishime, Olive,et al."Effects of drainage intensity on water and nitrogen use efficiency and rice grain yield in a semi-arid marshland in Rwanda".ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE 70.7(2020):578-593.