干旱区生态环境知识资源中心(Arid): 灌溉与施氮对紫花苜蓿干草产量及水分利用效率的影响

Arid

	灌溉与施氮对紫花苜蓿干草产量及水分利用效率的影响
其他题名	Effects of irrigation and nitrogen fertilization on hay yield and water use efficiency of Medicago sativa
	王田涛 1; 师尚礼 1; 张恩和 2; 王琦 3; 刘青林 2; 刘朝巍 2; 尹辉 1
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2010
卷号	29 期号:7 页码:1301-1306
中文摘要	在甘肃省河西绿洲灌区石羊河流域设计大田试验, 研究了不同灌溉量[常规灌溉 (330 mm)、节水20%灌溉(264 mm)和节水40%灌溉(198 mm)]和施氮量(0、40、80和120 kgN.hm~(-2))对紫花苜蓿(Medicago sativa)株高、干草产量和水分利用效率的影响. 结果表明:灌溉与施氮对紫花苜蓿植株高度产生一定的影响, 但其效果不明显;各茬紫花苜蓿干草产量随灌溉量增加而增加, 不同灌溉之间的干草产量相差显著, 节水40%灌溉、节水20%灌溉和常规灌溉的全生育期(3茬)平均干草产量分别为7232、7603和7796 kg.hm~(-2);节水40%灌溉的水分利用效率(15.56 kg.hm~(-2)·mm~(-1))显著高于节水20%灌溉(13.86 kg· hm~(-2)·mm~(-1)), 节水20%灌溉的水分利用效率显著高于常规灌溉(12.60 kg·hm~(-2)· mm~(-1)), 水分利用效率随灌溉量增加而显著降低;当施氮量达到40 kgN·hm~(-2)时, 紫花苜蓿干草产量(8223 kg·hm~(-2))和水分利用效率(15.18 kg·hm~(-2)·mm~(-1))达到最大值, 总干草产量比0、80和120 kg N·hm~(-2)施氮处理分别提高15%、16%和7%, 水分利用效率分别提高14%、14%和8%. 在河西绿洲灌区石羊河流域第一年种植紫花苜蓿, 从经济、生态和环境方面考虑, 节水40%灌溉和施氮40 kg N·hm~(-2)处理是较高干草产量和高水分利用效率取得一致的处理, 应大面积推广.
英文摘要	A field experiment was conducted in Hexi oasis of Gansu Province to study the effects of different irrigation amount (conventional irrigation, 330 mm; 20% water-saving irrigation, 264 mm; and 40% water-saving irrigation, 198 mm) and N application rate (0, 40, 80, and 120 kg N · hm~(-2)) on the plant height, hay yield, and water use efficiency (WUE) of Medicago sativa. Under the experimental condition, both irrigation and N fertilization had no significant effects on the plant height of M. sativa. However, irrigation had significant effects on the hay yield, which was increased with increasing irrigation amount, being 7232, 7603, and 7796 kg · hm~(-2) under 40% water-saving irrigation, 20% water-saving irrigation, and conventional irrigation, respectively, and there existed significant differences between the treatments. Irrigation also had significant effects on the WUE of M. sativa, which was decreased with increasing irrigation amount, being 15. 56, 13. 86, and 12. 60 kg · hm~(-2) · mm~(-1) under 40% water-saving irrigation, 20% water-saving irrigation, and conventional irrigation, respectively, and the difference between the treatments was significant. When the N application rate was 40 kg N · hm~(-2), the total hay yield (8223 kg · hm~(-2)) and the WUE of M. sativa (15. 18 kg·mm~(-1) · hm~(-2)) reached the maximum, and the increment of hay yield and WUE was 15% and 14%, 16% and 14%, and 7% and 8% higher than that when the N application rate was 0, 80, and 120 kg N · hm~(-2) respectively. From the viewpoints of economic return, ecology, and environment, it was considered that 40% water-saving irrigation combined with 40 kg N·hm~(-2) N supply would be the best choice for the first year of M. sativa planting in Hexi oasis of Gansu Province.
中文关键词	灌溉 ; 施氮 ; 紫花苜蓿 ; 干草产量 ; 水分利用效率
英文关键词	irrigation nitrogen fertilization Medicago sativa hay yield water use efficiency
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:3914340
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/2XILL650/225562
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.甘肃农业大学草业学院, 冻土工程国家重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	王田涛,师尚礼,张恩和,等. 灌溉与施氮对紫花苜蓿干草产量及水分利用效率的影响[J]. 甘肃农业大学,2010,29(7):1301-1306.
APA	王田涛.,师尚礼.,张恩和.,王琦.,刘青林.,...&尹辉.(2010).灌溉与施氮对紫花苜蓿干草产量及水分利用效率的影响.生态学杂志,29(7),1301-1306.
MLA	王田涛,et al."灌溉与施氮对紫花苜蓿干草产量及水分利用效率的影响".生态学杂志 29.7(2010):1301-1306.