干旱区生态环境知识资源中心(Arid): 干旱荒漠绿洲紫花苜蓿的节水灌溉及水效益分析--以民勤县为例

Arid

	干旱荒漠绿洲紫花苜蓿的节水灌溉及水效益分析--以民勤县为例
其他题名	Analysis on Water-saving Irrigation and Water Effectiveness of Medicago sativa in Arid Desert Oasis--An Example of Minqin County
	王祺 1; 王继和1 ; 徐延双 1; 崔宏明 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2004
卷号	24 期号:3 页码:343-348
中文摘要	通过对民勤绿洲区8个紫花苜蓿品种的节水灌溉技术研究,分析得出紫花苜蓿在刈割前10 d灌溉的平均耗水系数比刈割后灌溉的平均耗水系数降低18.6%,平均水效益提高23.3%;采用沟畦小块(面积0.03hm2)刈割前10 d灌溉的紫花苜蓿平均耗水系数为0.228kg?g-1,平均水效益为4.39kg?m-3,平均水经济效益为8.78元?m-3;是沟畦小块(0.03hm2)灌溉小麦耗水系数的47.2%,水生产效益的212%,水经济效益的309%.不同紫花苜蓿品种间水效益的研究表明,加拿大Ranger Lander、Kane和新疆大叶苜蓿的水效益明显高于对照品种的水效益.同时,通过对干旱荒漠区水资源紧缺、水资源有效利用率低以及种植业结构不合理的现状分析,提出了改革种植业内部粮经饲以往的面积比例65:32:3为可行比例1:1:1,以大力发展优良品种紫花苜蓿草产业为突破口,走紫花苜蓿产业化道路最终实现高效节水持续农业的对策.
英文摘要	Research on water-saving irrigation for 8 varieties of Medicago sativ has been conducted in Min-qin Oasis. The water consumption coefficient can be reduced by 18. 6% when Medicago sativa were irriga-ted on 10 days before cutting than after cutting, and the average water effectiveness can be increased by 23. 3% ; when irrigated on 10 days before cutting and with small strip(0. 03 hm2) irrigating method the av-erage water consumption coefficient of Medicago sativa was 0. 228 kg-g-1, the average water effectiveness was 4. 39 kg-m-3 and the average water economic benefit was 8. 78 Yuan-m"3, which respectively was only 47. 2% water consumption coefficient of wheat in same condition as Medicago sativa, but 212% water ef-fectiveness and 309% water economic benefit of wheat. Irrigation research among different Medicago sati-va varieties shows that the species of Ranger Lander and Kane from Canada and broad-leaf one from Xinjiang of China remarkably had higher water effectiveness (P<0.05) than the checking species. Suggested by sit-uation analysis on water resources shortage, low water effectiveness and irrational cultivating structure, the area proportion of crop to cash crop and to fodder should be adjusted from 65 : 32 = 3 of the past to 1 : 1 : 1 in plan; for realizing high-effectively water-saving and sustainable agriculture a feasible strategy is to take prataculture of good specie Medicago sativa as the start and gradually go into its industrializing road.
中文关键词	荒漠绿洲 ; 紫花苜蓿 ; 水效益 ; 持续农业
英文关键词	desert oasis Medicago sativa water effectiveness sustainable agriculture
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:1598697
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205746
作者单位	1.甘肃省治沙研究所, 武威, 甘肃 733000, 中国; 2.武威铁路房建生活段, 武威, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	王祺,王继和,徐延双,等. 干旱荒漠绿洲紫花苜蓿的节水灌溉及水效益分析--以民勤县为例[J]. 甘肃省治沙研究所,2004,24(3):343-348.
APA	王祺,王继和,徐延双,&崔宏明.(2004).干旱荒漠绿洲紫花苜蓿的节水灌溉及水效益分析--以民勤县为例.中国沙漠,24(3),343-348.
MLA	王祺,et al."干旱荒漠绿洲紫花苜蓿的节水灌溉及水效益分析--以民勤县为例".中国沙漠 24.3(2004):343-348.