铁杆蒿枯落物对四种豆科牧草的化感作用

doi:10.11733/j.issn.1007-0435.2018.04.004

草地学报 ›› 2018, Vol. 26 ›› Issue (4): 818-825.DOI: 10.11733/j.issn.1007-0435.2018.04.004

铁杆蒿枯落物对四种豆科牧草的化感作用

雷威肖¹, 李伟², 郭梁², 程积民^1,3, 张义³, 郑周敏¹, 赵妮¹

1. 西北农林科技大学动物科技学院, 陕西杨凌 712100;
2. 西北农林科技大学水土保持研究所, 陕西杨凌 712100;
3. 中国科学院水利部水土保持研究所, 陕西杨凌 712100

收稿日期:2018-03-05 修回日期:2018-07-21 出版日期:2018-08-15 发布日期:2018-09-20
通讯作者: 程积民
作者简介:雷威肖(1993-),男,陕西汉中人,硕士研究生,主要从事恢复生态学研究,E-mail:1273809119@qq.com
基金资助:
国家重点研发计划-北方农牧交错带草地退化机理及生态修复技术集成示范（2016YFC0500700），国家自然科学基金（41601586，41230852，41701606）；中国典型自然保护区保护成效评估-云雾山草原（KFJ-SW-YW028-07）资助

Allelopathy of Artemisia gmelinii Litter on Four Legume Forages

LEI Wei-xiao¹, LI Wei², GUO Liang², CHENG Ji-min^1,3, ZHANG Yi³, ZHENG Zhou-ming¹, ZHAO Ni¹

1. College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi Province 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi Province 712100, China;
3. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi Province 712100, China

Received:2018-03-05 Revised:2018-07-21 Online:2018-08-15 Published:2018-09-20

摘要/Abstract

摘要： 研究了黄土区优势植物铁杆蒿（Artemisia gmelinii）枯落物对红豆草（Onobrychis viciaefolia）、沙打旺（Astragalus adsurgens）、百脉根（Lotusc corniculatus）和紫花苜蓿（Medicago sativa）等四种常见豆科牧草种子萌发和幼苗生理特性的化感效应。结果表明：铁杆蒿对这几种豆科牧草的发芽率和发芽势总体上均呈现“低质量浓度促进，高质量浓度抑制”的效应；紫花苜蓿综合化感效应在不同处理中均受到抑制，随着铁杆蒿枯落物含量的增加，抑制作用增强；但红豆草、百脉根和沙打旺的综合化感效应表现出低促高抑的趋势；红豆草和沙打旺在30 g铁杆蒿枯落物浓度时促进效应最强，百脉根在60 g时促进效应最强。以上结果初步表明在有铁杆蒿分布的草地不适合种植以及补播紫花苜蓿，而适当密度的铁杆蒿分布有助于种植以及补播红豆草、百脉根和沙打旺。

关键词: 铁杆蒿, 化感作用, 豆科牧草, 补播

Abstract: Allelopathic effects of the dominant plant Artemisia gmelinii on the Loess Plaetau on the four common legume forage (Onobrychis viciaefolia,Astragalus adsurgens,Lotusc corniculatus and Medicago sativa) were explored by studying the effects of A. gmelini extracts at different concentrations on seed germination and physiological characteristics of seedling growth. The results demonstrated that,the germination rate and germination power of these legume species generally showed the trend of "promotion at lower concentration,but inhibition at higher concentration";the comprehensive allelopathic effects on M. sativa were inhibition in different treatments and the inhibitory effect was gradually enhanced with the increase of litter content of A. gmelinii. However,the comprehensive allelopathic effects on O. viciaefolia,A. adsurgens and L. corniculatus showed the trend of "promotion at low concentration,but inhibition at high concentration",and the promoting effects on O. viciaefolia and A. adsurgens were the strongest at 30 g litter concentration of A.gmelinii while for L.corniculatus the strongest promoting effect was at 60 g litter concentration of A.gmelinii. All these results preliminarily indicated that the A. gmelinii dominated grassland is not suitable for planting and reseeding M. sativa. Grassland with the right amount of A. gmelinii is beneficial for planting and reseeding O. viciaefolia,A. adsurgens and L. corniculatus.

Key words: Artemisia gmelinii, Allelopathy, Legume forage, Reseeding

中图分类号:

S541

雷威肖, 李伟, 郭梁, 程积民, 张义, 郑周敏, 赵妮. 铁杆蒿枯落物对四种豆科牧草的化感作用[J]. 草地学报, 2018, 26(4): 818-825.

LEI Wei-xiao, LI Wei, GUO Liang, CHENG Ji-min, ZHANG Yi, ZHENG Zhou-ming, ZHAO Ni. Allelopathy of Artemisia gmelinii Litter on Four Legume Forages[J]. Acta Agrestia Sinica, 2018, 26(4): 818-825.

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铁杆蒿枯落物对四种豆科牧草的化感作用

Allelopathy of Artemisia gmelinii Litter on Four Legume Forages

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