干旱区生态环境知识资源中心(Arid): 药用植物黄芪的茎流速率研究

Arid

	药用植物黄芪的茎流速率研究
其他题名	Stemflow Rate Research of Medicinal Plant - Astragalus
	张盹明 1; 徐先英 1; 唐进年 2; 金红喜 1
ISSN	1003-7578
出版年	2007
卷号	21 期号:4 页码:146-149
中文摘要	本文采用植物热平衡流测（SapFlowSystem）计，对沙漠绿洲边缘沙地栽植的药用植物黄芪整株茎流速率的日变化、季节变化规律及耗水量进行了测定，测试分析得出：黄芪茎流速率日变化呈双峰曲线，第一茎流速率峰值为91．22gm／hr出现在11：00时；第二茎流速率峰值为111．05gm／hr出现在20：00时；黄芪茎流速率在季节变化中7月份平均茎流速率最大为28．83gm／hr，其次是6月平均值为4．46gm／hr，8月份为4．40gm／hr。经黄芪植物茎流速率样株的耗水量计算，每亩10000株黄芪苗木蒸腾耗水量的生理用水量在6月份每亩为32m^3、7月份每亩207m^3、8月份每亩31m^3、5月和9月共用水30m^3。经茎流测试分析表明：在绿洲边缘种植药用植物黄芪比种植农作物玉米、小麦可节水27％-33％；另外，黄芪茎流速率与环境因子之间经相关分析得出，黄芪茎流与大气温度（TAIR）和水气压亏缺（VPD）呈极显著正相关关系，r值分别为0．57004和0．42114；与光量子通量密度（Qn）、大气CO2浓度（CO2·℃）和空气湿度（RH）呈不显著正或负相关关系；同时得出了黄芪茎流与各影响因子之间的回归方程。
英文摘要	Stemflow rate daily and seasonal changes law and water consumption of wholeAstragalus were determined by Sap Flow System. The testing result was thatAstragalus stemflow rate daily change displayed double peak curves -the first stemflow peak value was 91.22gm/hr presenting at 11：00 and the second stemflow peak value was 111.05 gm/hr presenting at 20：00. AndAstragalus mean stemflow rate of seasonal change displayed the highest value 28.83gm/hr in July, second respectively was 4.46gm/hr in June and 4.40gm/hr in Aug. By calculating water consumption of Astragalus sample plant, the water usage Of 1000 plant/muAstragalus due to transpiration was 32 m3/mu in June , 207 m3/mu in July, 31 m3/mu in Aug. and 30 m3/mu in May and Sep. Stemflow test showed that planting medicinal plant -Astragalus could conserve water 27 -33% comparing with planting crop - corn and wheat in brink of oasis. In addition, correlation analysis showed that ： The highly significant correla- tion were found out betweenAstragalus stemflow and air temperature （TAIR）（ r = 0.57004）, betweenAstragalus stemflow and air vapor pressure deficit （VPD）（ r = 0. 42114）.Astragalus stemflow was not significantly correlated to photon flux density （ Qn）, air CO2density （CO2·℃ ） and air relative humidity（RH）. And the regression equation betweenAstragalus stemflow and every influencing factors was concluded.
中文关键词	黄芪 ; 茎流量 ; 耗水 ; 茎流日变化 ; 节水 ; 回归分析
英文关键词	tstragaus stemflow water consumption stemflow daily change water conservation regression analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:2746436
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/2XILL650/221040
作者单位	1.甘肃省治沙研究所, 甘肃省荒漠化防治重点实验室, 武威, 甘肃 733000, 中国; 2.甘肃省治沙研究所, 甘肃省荒漠化防治重点实验室, 733000
推荐引用方式 GB/T 7714	张盹明,徐先英,唐进年,等. 药用植物黄芪的茎流速率研究[J]. 甘肃省治沙研究所,2007,21(4):146-149.
APA	张盹明,徐先英,唐进年,&金红喜.(2007).药用植物黄芪的茎流速率研究.,21(4),146-149.
MLA	张盹明,et al."药用植物黄芪的茎流速率研究".21.4(2007):146-149.