| 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
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| 2018
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发表期刊 | 草地学报
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卷号 | 26期号:4页码:818-825 |
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( As -
tragalus 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 30g 铁杆蒿枯
落物浓度时促进效应最强,百脉根在 60g 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。 |
其他摘要 | 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 germi -
nation 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 in -
crease 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
30g
litter concentration of A . gmelinii while for L . corniculatus the strongest promoting
effect was at 60g
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 . |
关键词 | 铁杆蒿
化感作用
豆科牧草
补播
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收录类别 | 中文核心期刊要目总览
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语种 | 中文
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文献类型 | 期刊论文
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条目标识符 | sbir.nwafu.edu.cn/handle/361005/10354
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专题 | 水保所知识产出(1956---)
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作者单位 | 1.西北农林科技大学动物科技学院 2.西北农林科技大学水土保持研究所 3.中国科学院水利部水土保持研究所
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推荐引用方式 GB/T 7714 |
雷威肖,李伟,郭梁,等. 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.
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APA |
雷威肖,李伟,郭梁,程积民,&张义.(2018).铁杆蒿枯落物对四种豆科牧草的化感作用.草地学报,26(4),818-825.
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MLA |
雷威肖,et al."铁杆蒿枯落物对四种豆科牧草的化感作用".草地学报 26.4(2018):818-825.
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