ZHAN Yufang,LU Yanfang,ZHEN Weiling,et al.Spatial Distribution Characteristics of Root System of Lycium barbarum L. in Hexi Irrigation Area[J].Research of Soil and Water Conservation,2016,23(04):133-137.
河西灌区枸杞根系空间分布特征研究
- Title:
- Spatial Distribution Characteristics of Root System of Lycium barbarum L. in Hexi Irrigation Area
- 分类号:
- Q948.1
- 摘要:
- 采用土钻法对河西灌区枸杞的根系分布特征进行了调查。结果表明：枸杞细根根系、粗根根系集中分布在20—40 cm土层内；细根和粗根生物量水平分布随着距树干距离的增加呈指数性下降；根据枸杞根系分布特点，枸杞合理的施肥方法应采用沟施或环施，位置距枸杞树干30~90 cm，深度30 cm左右；结合树木根系消弱系数，从量化的角度对不同树龄枸杞根系分布特征的进一步分析，发现随着距树干距离的增加，3 a生、8 a生枸杞细根根系消弱系数β值随着水平距离的增加先增大后减小，最大值在距树干60 cm处，分别为0.960 3，0.984 0；而枸杞粗根根系的β值随着距树干距离的增大而增大，在距树干90 cm处有较大范围的分布，对树木水分和养分的疏导起到了非常重要的作用。细根根系的β值大于粗根根系的β值，说明细根比粗根在垂直方向分布范围深，吸收利用深层土壤水分和养分的能力强，这种分布特征扩大了枸杞的吸收空间，有利于树木吸收深层的水分和养分，促进树木地上部分的生长和发育。
- Abstract:
- Soil drilling method is used to investigate root distribution characteristics of Lycium barbarum L. in Hexi irrigation area.The results indicated that fine roots, coarse roots concentrated in the soil layer of 20-40 cm; fine and coarse root biomass exponentially decreased with distance increase from the trunk; according to the distribution characteristics of Lycium barbarum L. wolfberry root, the reasonable fertilization methods should be furrow fertilization or ring fertilization,with 30~90 cm away from Lycium barbarum L. trunk and the depth of 30 cm; combining with the tree root extinction coefficient, from the quantitative point of further analysis of the root distribution characteristics of different ages of Lycium barbarum L., it was found that with increase of distance from the stem, the value increased with the increase of the horizontal distance after 3 years, 8 years of Lycium barbarum L., the maximum values of root extinction coefficient occurred in the site 60 cm away from the stem, which were 0.960 3 and 0.984 0, respectively;the crude Lycium barbarum L. root β value increased with the increase of distance from the stem, the distribution of range was wide in the site 90 cm away from the stem, which played the very important role in regulating water and nutrients in the trees. The β value of fine root was greater than that of the thick root, fine root distribution was deeper than coarse root in the vertical direction, the ability of the fine root to absorb the deep soil water and nutrient was greater, the distribution characteristics expanded space and was conducive to Lycium barbarum L., trees to absorb the deep water and nutrients, and promote the growth of ground parts and tree development.
参考文献/References:
[1] 程广有,侯杰,唐晓杰,等.3种枸杞耐盐碱性的比较[J].东北林业大学学报,2007,35(11):47-49.
[2] 董静洲,杨俊军,王瑛.我国枸杞属物种资源及国内外研究进展[J].中国中药杂志,2008,33(18):2020-2027.
[3] 张小全,吴可红,Dieter Muraeh.树木细根生产与周转研究方法评述[J].生态学报,2000,20(5):875-883.
[4] 刘兴良,马钦彦,杨冬生,等.川西山地主要人工林种群根系生物量与生产力[J].生态学报,2006,26(2):542-551.
[5] Tauber M J,Tauber C A,Masaki S.Seasonal Adaptions of Insect[M].Oxford:Oxford Univ.Press,1986.
[6] 任安芝,高玉葆,王金龙.不同沙地生境下黄柳的根系分布和冠层结构特征[J].生态学报,2001,21(3):399-404.
[7] 赵忠,李鹏,王乃江.渭北黄土高原主要造林树种根系分布特征的研究[J].应用生态学报,2000,11(1):37-39.
[8] 李鹏,赵忠,李占斌,等.渭北黄土区刺槐根系空间分布特征研究[J].生态环境,2005,14(3):405-409.
[9] 张良德,徐学选.延安燕沟流域刺槐根系分布特征[J].西北林学院学报,2011,26(2):9-14.
[10] Gale M R, Grigal D F. Vertical root distributions of northern tree species in relation to successional status[J]. Canadian Journal of Forest Research, 1987,17(8):829-834.
[11] Gale M R, Grigal D F, Harding R B. Soil productivity index:predictions of site quality for white spruce plantations[J]. Soil Science Society of America Journal, 1991,55(6):1701-1708.
[12] 张国盛,王林和.毛乌素沙地臭柏根系分布及根量[J].中国沙漠,1999,19(4):378-383.
[13] 赵爱芬.差巴嘎篙和小叶锦鸡儿根系分布及生长动态的初步研究[J].中国草地,1994(3):15-19.
[14] 杨玉盛,陈光水,林鹏.格氏栲天然林与人工林细根生物量、季节动态及净生产力[J].生态学报,2003,23(9):1719-1730.
[15] 韩有志,梁胜发.华北落叶松人工林根系分布及根系生物量研究[J].山西林业科技,1997(3):36-40.
[16] 杨玉盛,陈光水,何宗明,等.杉木观光木混交林细根的分布[J].热带亚热带植物学报,2002,10(2):111-117.
[17] Jackson R B, Canadell J, Ehleringer J R, et al. A global analysis of root distributions for terrestrial biomes[J]. Oecologia, 1996,108(3):389-411.
[18] Pregitzer K S, Hendrick R L, Fogel R. The demography of fine roots in response to patches of water and nitrogen[J]. New Phytologist, 1993,125(3):575-580.
[19] Burton A J,Pregitzer K S,Headrick R L.Relationships between fine root dynamics and nitrogen availability in Michigan northern hardwood forests[J].Oecologia, 2000,125(3):389-399.
[20] 王进鑫,王迪海,刘广全.刺槐和侧柏人工林有效根系密度分布规律研究[J].西北植物学报,2004,24(12):2208-2214.
[21] 李鹏,赵忠,李占斌,等.渭北黄土区刺槐根系空间分布特征研究[J].生态环境,2005,14(3):405-409.
[22] 李润淮.枸杞高产栽培技术[M].北京:盲文出版社,2000.
相似文献/References:
[1]陈浩,余毅敏,唐旭栋,等.浦阳江下游江岸草本植物根系对土壤抗冲性的影响[J].水土保持研究,2017,24(02):60.
CHEN Hao,YU Yimin,TANG Xudong,et al.Effect of the Root Systems of Herbaceous Plants on Soil Anti-scourbility in the Riparian Area of Lower Reaches of Puyang River[J].Research of Soil and Water Conservation,2017,24(04):60.
[2]杨一凡,吴发启,段红腾,等.青海主要枸杞产区不同耕作措施对灰棕漠土理化性质影响及肥力综合评价[J].水土保持研究,2020,27(02):1.
YANG Yifan,WU Faqi,DUAN Hongteng,et al.Effects of Different Tillage Measures on Physical and Chemical Properties of Gray Brown Desert Soil and Comprehensive Evaluation of Fertility in Major Wolfberry Production Areas of Qinghai[J].Research of Soil and Water Conservation,2020,27(04):1.
备注/Memo
收稿日期:2015-07-01;改回日期:2015-09-08。
基金项目:甘肃省林果产业科技创新项目和品牌创立补助资金项目（甘财农[2012]385号）
作者简介:占玉芳(1970-),女,甘肃民勤人,农学学士,副研究员,主要从事林果花科研及良种引育、推广。E-mail:zyf700104@sina.com