Primary Study on Root System of Alfalfa in the Sowing Year

doi:10.11733/j.issn.1007-0435.2008.03.020

›› 2008, Vol. 16 ›› Issue (3): 313-315.DOI: 10.11733/j.issn.1007-0435.2008.03.020

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Primary Study on Root System of Alfalfa in the Sowing Year

WANG Yue-sheng^1,2, YU Lin-qing², ZHANG Li-jun ²

1. Prataculture Collge Gansu Agricultural University, Lanzhou Gansu Province 730070, China;
2. Grassland Research Institute of Academy of Agricultural Science, Hottot Inner Mongolia 010010, China

Received:2007-12-18 Revised:2008-03-12 Online:2008-06-15 Published:2008-06-15

播种当年苜蓿根系研究初报(简报)

王月胜^1,2, 于林清², 张利军²

1. 甘肃农业大学草业学院, 甘肃, 兰州, 730070;
2. 中国农业科学院草原研究所, 内蒙古, 呼和浩特, 010010

作者简介:王月胜(1982- ),男,内蒙古呼和浩特人,在读硕士,研究方向为牧草种资资源与育种,E-mail:wangys198200@sina.com
基金资助:
国家自然科学基金项目(30671487);中央级公益性科研院所基本科研业务费专项资金

Abstract

Key words: Sowing, Alfalfa(Medicago sativa L.), Root system

摘要： 苜蓿(Medicago sativa)大部分栽培品种的根系为直根型,由主根和侧根组成.在排水良好、土层深厚、湿润的地方,第1年主根可延伸至土表下1.8 m,第2年至3.6 m,最终可延伸至6.0 m以下(Weaver,1926).其根系可划分为直根型、侧根型、根蘖型和根颈型.苜蓿近地面的根与茎连接部为根颈,由真叶以下的胚轴发育而成.其上能形成大量的芽,可长成地上部茎枝,亦是越冬芽着生的部位.根颈可随生长年限的增加不断加粗和向土中深入.苜蓿根颈是产生分枝的重要部位,直接影响苜蓿生产性能和可持续利用,如再生性、耐寒性、抗旱性和抗病虫害性等都与其密切相关.

关键词: 播种, 苜蓿, 根系

CLC Number:

S812

WANG Yue-sheng, YU Lin-qing, ZHANG Li-jun . Primary Study on Root System of Alfalfa in the Sowing Year[J]. , 2008, 16(3): 313-315.

王月胜, 于林清, 张利军. 播种当年苜蓿根系研究初报(简报)[J]. , 2008, 16(3): 313-315.

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Primary Study on Root System of Alfalfa in the Sowing Year

播种当年苜蓿根系研究初报(简报)

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