干旱区生态环境知识资源中心(Arid): 西北绿洲灌区饲用燕麦耗水特性及产量变化对水氮耦合的响应

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	西北绿洲灌区饲用燕麦耗水特性及产量变化对水氮耦合的响应
其他题名	Water consumption characteristics and yields of fodder oat under different irrigation and nitrogen fertilization regimes in the northwest oasis irrigation area
	冯福学 1; 慕平 2; 赵桂琴 1; 柴继宽 1; 刘欢 1; 陈国栋 3
来源期刊	草业学报
ISSN	1004-5759
出版年	2017
卷号	26 期号:8 页码:74-84
中文摘要	灌水和施肥是调控作物生长和产量形成的两大重要技术措施,研究水氮互作对燕麦耗水特性及产量的影响,对于优化燕麦高产高效栽培理论和技术具有重要意义。2014-2015年连续两个生长季,在甘肃河西绿洲灌区,田间试验设置3个定额灌溉和3个施氮(纯N)水平,研究水氮耦合对陇燕3号农田0~150cm土层耗水量、棵间蒸发、产量及水分利用效率的影响。3个灌溉处理的灌水量分别为270.0mm(I_1)、337.5mm(I_2)和405.0mm(I_3), 3个施N水平分别为90kg/hm~2(N_1)、120kg/hm~2(N_2)和150kg/hm~2(N_3)。在全生育期内,棵间蒸发量(E)及E/ ET(总蒸散量)的比例表现先降后升趋势,且相同施氮量下,拔节至灌浆期随灌水量的增大而增大,而灌浆至成熟期则随灌水量的增大而减小。相同施氮量下,燕麦耗水量与籽粒产量随着灌水量的增加而显著增加,水分利用效率却随着灌水量的增加而降低。所有处理中,N_3I_3产量最高(5466.0~5727.5kg/hm~2),N_3I_2次之(5428.5~5678.5kg/hm~2),N_1I_1最小(4504.5~4804.3kg/hm~2),而N_3I_2的水分利用效率最大[12.11~12.82kg/(mm·hm~2)], N_3I_1次之[12.04~12.63kg/(mm·hm~2)],N_1I_3最小[9.79~10.58kg/(mm·hm~2)]。由此表明,水氮耦合对燕麦水分利用及产量具有显著互作效应,施氮量150kg/hm~2、灌溉定额337.5mm是西北绿洲灌区燕麦种植较佳的节水、高产水氮管理模式。
英文摘要	Irrigation and fertilization are the two most important methods to increase crop growth and yield. Understanding the water consumption characteristics and grain yield of oat(Avena sativa)under different water- nitrogen(N)regimes is useful to optimize oat cultivation.In the 2014-2015o at growing seasons,field experiments were conducted with three irrigation levels and three N application rates to study the effects of the water-N interaction on soil water consumption in the 0-150mm layer,soil evaporation,grain yield,and water use efficiency(WUE)of the oat varietyLongyan 3’.The three irrigation amounts were 270(I_1),337.5(I_2), and 405mm (I_3)and the three N application rates were 90(N_1),120(N_2),and 150kg/ha(N_3).The soil evaporation and the proportion of soil evaporation(E)to evapotranspiration(E/ET)decreased and then increased during the growing period.Under the same N application rate,E and its proportion of E/ET increased with increasing amounts of irrigation from the jointing to the filling stage,but decreased from the filling to the harvest stage.The oat water consumption and grain yield under a fixed N application rate were positively related to the amount of irrigation,whereas WUE was negatively related to the amount of irrigation.The highest grain yield of oat was in N_3I_3(5466.0-5727.5kg/ha),followed by N_3I_2(5428.5-5678.5kg/ha),and then N_1I_1(4504.5-4804.3kg/ha).The highest WUE was in N_3I_2[(12.11-12.82kg/(mm·ha)],followed by N_3I_1[12.04-12.63kg/(mm·ha)],and then N_1I_3[9.79-10.58kg/(mm·ha)].The water-nitrogen interaction had significant effects on WUE and oat yield.Our results suggest that N application at 150kg/ha combined with irrigation at 337.5mm is a water-saving method to cultivate oat with high-yields in the Northwest Oasis area.
中文关键词	燕麦 ; 耗水特性 ; 水氮耦合 ; 水分利用效率
英文关键词	oat water consumption characteristic water and nitrogen coupling water use efficiency(WUE)
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:6070786
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235703
作者单位	1.甘肃农业大学草业学院, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学农学院, 兰州, 甘肃 730070, 中国; 3.塔里木大学植物科学学院, 阿拉尔, 新疆 843300, 中国
推荐引用方式 GB/T 7714	冯福学,慕平,赵桂琴,等. 西北绿洲灌区饲用燕麦耗水特性及产量变化对水氮耦合的响应[J]. 甘肃农业大学,2017,26(8):74-84.
APA	冯福学,慕平,赵桂琴,柴继宽,刘欢,&陈国栋.(2017).西北绿洲灌区饲用燕麦耗水特性及产量变化对水氮耦合的响应.草业学报,26(8),74-84.
MLA	冯福学,et al."西北绿洲灌区饲用燕麦耗水特性及产量变化对水氮耦合的响应".草业学报 26.8(2017):74-84.