土壤干旱对黄土高原4个乡土禾草生长及水分利用特性的影响

草业学报 ›› 2010, Vol. 19 ›› Issue (2): 21-30.

土壤干旱对黄土高原4个乡土禾草生长及水分利用特性的影响

郭颖¹,韩蕊莲^2*,梁宗锁^1,2

1.西北农林科技大学生命科学学院,陕西杨凌 712100;
2.西北农林科技大学中国科学院水利部水土保持研究所, 陕西杨凌 712100

收稿日期:2009-10-12 出版日期:2010-02-25 发布日期:2010-04-20
作者简介:郭颖(1984-),女,陕西延安人,在读硕士。E-mailsxyaguoying@yahoo.com.cn
基金资助:
中国科学院知识创新工程重要方向项目(KZCX2-YW-443)和中国科学院西部行动计划项目(KZCX2-XB2-05-01)资助。

Effect of soil drought on growth and water use efficiency characteristicsof four native gramineous grasses in Loess Plateau

GUO Ying¹, HAN Rui-lian², LIANG Zong-suo^1,2

1.College of Life Science, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100,
China;
2.Institute of Soil and Water Conservation, Northwest Sci-Tech University
of Agriculture and Forestry, Yangling 712100, China

Received:2009-10-12 Online:2010-02-25 Published:2010-04-20

摘要/Abstract

摘要： 应用盆栽试验,人工控制土壤水分含量对黄土高原4个乡土禾草长芒草、冰草、无芒隐子草、白羊草的生长及水分利用特性进行了研究。结果表明,随干旱胁迫程度加剧,各草种耗水量明显减少;不同草种单株耗水量差异明显,表现为:白羊草>冰草>无芒隐子草>长芒草,最高日、旬、月耗水量差异明显,中度和重度水分亏缺下的最高耗水日比适宜水分下的提前10d左右。1d中的最大耗水高峰随着土壤含水量的降低有提前的趋势。4个草种株高生长和单叶叶面积明显受土壤水分含量影响,均表现为:适宜水分>中度干旱>重度干旱,土壤干旱下长芒草和无芒隐子草受抑制程度显著大于冰草和白羊草;随干旱胁迫程度的加剧和干旱时间的延长,长芒草和无芒隐子草的叶片组织含水量和叶片相对含水量明显降低,冰草和白羊草则一直能维持较高含水量,且下降幅度小,稳定性好;长芒草和无芒隐子草的水分利用效率(wateruseefficiency,WUE)随干旱加剧而降低,两者属于低耗水、低WUE草种,冰草和白羊草在中度干旱下WUE最高,相比白羊草,冰草属于低耗水、高WUE草种,白羊草属于高耗水、高WUE草种。

Abstract: The growth and water use efficiency characteristics of four native grasses in Loess Plateau were studied under different soil water contents. The results showed that water consumption of those species decreased with the increase of soil drought stress, and water consumption of those grasses was different: Bothriochloa ischaemum>Agropyron cristatum>Cleistogenes songorica>Stipa bungeana. The highest water consumption in one day, ten-day and one month were different. The highest water consumption day of medium and severe drought stress occurred about 10 days earlier than the adequate soil water content. The time of day when the greatest water consumption occurred arrived early with the decrease of soil water contents. The growth of plant height and single leaf area of the four native grasses were the fastest under adequate soil water contents, and were the lowest under severe drought .Under drought condition, the growth of four grasses was all inhibited, especially for S. bungeana and C. songorica. The leaf water content of different species decreased with the increase of soil water stress. The leaf water content of A. cristatum and B. ischaemum were higher than that of S. bungeana and C. songorica obviously. Water use efficiency of S. bungeana and C. songorica decreased with the decrease of soil water content, they had lower water consumption and low WUE characteristics. A. cristatum and B. ischaemum had the highest WUE under medium drought treatments, respectively. A. cristatum had low water consumption and high WUE characteristic, B. ischaemum had high water consumption and high WUE characteristic.

中图分类号:

郭颖,韩蕊莲,梁宗锁. 土壤干旱对黄土高原4个乡土禾草生长及水分利用特性的影响[J]. 草业学报, 2010, 19(2): 21-30.

GUO Ying, HAN Rui-lian, LIANG Zong-suo. Effect of soil drought on growth and water use efficiency characteristicsof four native gramineous grasses in Loess Plateau[J]. Acta Prataculturae Sinica, 2010, 19(2): 21-30.

参考文献

[1] 侯庆春, 韩蕊莲. 黄土高原植被建设中的有关问题[J]. 水土保持通报, 2000, 20(2): 53-56.
[2] 山仑, 徐炳成. 黄土高原半干旱地区建设稳定人工草地的探讨[J]. 草业学报, 2009, 18(2): 1-2.
[3] 韩蕊莲, 景维杰, 侯庆春, 等. 黄土高原人工整地与抗旱造林技术研究进展[J]. 西北植物学报, 2003, 23(8): 1331-1335.
[4] 韩蕊莲, 梁宗锁, 侯庆春, 等. 黄土高原适生树种苗木的耗水特性[J]. 应用生态学报, 1994, 5(2): 210-213.
[5] 李银芳. 不同水分生境对梭梭耗水量的影响[J]. 干旱区研究, 1992, 9(4): 45-50.
[6] 傅坤俊. 黄土高原植物志[M]. 北京: 科学出版社, 2000.
[7] 邰建辉, 王彦荣, 陈谷. 无芒隐子草种子萌发、出苗和幼苗生长对土壤水分的响应[J]. 草业学报, 2008, 17(3): 105-110.
[8] 熊伟, 王彦辉, 程积民, 等. 三种草本植物蒸散量的对比试验研究[J]. 水土保持学报, 2003, 17(1): 170-172.
[9] 李景欣, 云锦凤, 苏布道, 等. 几个不同种群冰草的抗旱性比较研究[J]. 干旱区资源与环境, 2004, 18(5): 163-166.
[10] 刘文辉, 周青平, 颜红波, 等. 青海扁茎早熟禾种群地上生物量动态[J]. 草业学报, 2009, 18(2): 18-24.
[11] Jones M M, Turner N C. Osmotic adjustment in leaves of sorghum in response to water deficits[J]. Plant Physiology, 1978, 61: 122-126.
[12] Bolger T P, Matches A G. Water use efficiency and yield of sainfoin and alfalfa[J]. Crop Science, 1990, 30: 143-148.
[13] Grimes D W, Wiley P L, Sheesley W R. Alfalfa yield and plant water relations with variable irrigation[J]. Crop Science, 1992, 32: 1381-1387.
[14] Neumann P M. Salinity resistance and plant growth revisited[J]. Plant Cell and Environment, 1997, 20: 1193-1198.
[15] Ares A, Fownes J H. Water supply regulates structure, productivity, and water use efficiency of Acacia koaforest in Hawaii[J]. Oecologia, 1999, 12: 458-466.
[16] Zhao B Z, Kondo M, Maeda M, et al. Water-use efficiency and carbon isotope discrimination in two cultivars of upland rice during different developmental stages under three water regimes[J]. Plant Soil, 2004, 26: 61-75.
[17] 祁娟, 徐柱, 王海清. 旱作条件下披碱草属植物叶的生理生化特征分析[J]. 草业学报, 2009, 18(1): 39-45.
[18] 谢贤健, 兰代萍, 白景文. 三种野生岩生草本植物的抗旱性综合评价[J]. 草业学报, 2009, 18(4): 75-80.
[19] 高俊凤, 孙群, 曹翠玲, 等. 植物生理实验指导[M]. 北京: 高等教育出版社, 2006: 15-16.
[20] 杨建伟, 梁宗锁, 韩蕊莲. 不同干旱土壤条件下杨树的耗水规律及水分利用效率研究[J]. 植物生态学报, 2004, 28(5): 630-636.
[21] 刘国利, 何树斌, 杨惠敏. 紫花苜蓿水分利用效率对水分胁迫的响应及其机理[J]. 草业学报, 2009, 18(3): 207-213.
[22] 孙铁军, 马万里, 武菊英. 10种禾草苗期抗旱性的比较研究[J]. 草业学报, 2008, 17(4): 42-49.
[23] 曲涛, 南志标. 作物和牧草对干旱胁迫的响应及机理研究进展[J]. 草业学报, 2008, 17(2): 126-135.
[24] 严昌荣, 韩兴国, 陈灵芝. 六种木本植物水分利用效率和其小生境关系研究[J]. 生态学报, 2001, 21(11): 23-27.
[25] 杨建伟, 梁宗锁, 韩蕊莲. 不同土壤水分状况对刺槐的生长及水分利用特征的影响[J]. 林业科学, 2004, 40(5): 93-97.
[26] 高玉葆, 刘峰, 任安芝, 等. 不同类型和强度的干旱胁迫对黑麦草实验种群物质生产与水分利用的影响[J]. 植物生态学报, 1999, 23(6): 510-520.
[27] 王齐, 孙吉雄, 安渊. 水分胁迫对结缕草种群特征和生理特性的影响[J]. 草业学报, 2009, 18(2): 33-38.
[28] 王孟本, 李洪建, 柴宝峰. 柠条的水分生理生态学特性[J]. 植物生态学报, 1996, 20(6): 494-501.
[29] 葛晋纲, 蔡庆生, 周兴元, 等. 土壤干旱胁迫对2 种不同光合类型草坪草的光合特性和水分利用率的影响[J]. 草业科学, 2005, 22(4): 103-107.
[30] 陈雅君, 刘慧民, 张雪岩, 等. 水分胁迫对草地早熟禾生长及水分生理指标的影响[J]. 中国草地学报, 2009, 31(2): 59-63.
[31] 郑敏娜, 李向林, 万里强, 等. 四种暖季型禾草对水分胁迫的生理响应[J]. 中国农学通报, 2009, 25(9): 114-119.
[32] 黄占斌, 山仑. 水分利用效率及其生理生态机理研究进展[J]. 生态农业研究, 1998, 6(4): 19-23.
[33] 孙洪仁, 关天复, 孙建益, 等. 不同年限紫花苜蓿(生长)水分利用效率和耗水系数的差异[J]. 草业科学, 2009, 26(3): 39-42.
[34] 接玉玲, 杨洪强, 崔明刚, 等. 土壤含水量与苹果叶片水分利用效率的关系[J]. 应用生态学报, 2001, 12(3): 387-390.
[35] 张小林, 彭致功. 不同水分处理对草坪草生长发育的影响[J]. 草业科学, 2009, 26(4): 144-149.