| 摘要: |
| 【目的】探讨不同质量浓度(以苜蓿粉计)紫花苜蓿茎叶水浸提液对无芒雀麦和多年生黑麦草种子萌发以及早期幼苗生长的影响。【方法】制备0.05，0.08和0.10 g/mL紫花苜蓿茎叶水浸提液，采用培养皿滤纸发芽法，以蒸馏水为对照，研究其对无芒雀麦和多年生黑麦草种子发芽率、幼苗高度和根长的影响。【结果】不同质量浓度的紫花苜蓿茎叶水浸提液对多年生黑麦草和无芒雀麦种子的萌发、幼苗高度及根长均有抑制作用，并且随着紫花苜蓿茎叶水浸提液质量浓度的增加，抑制作用增强。当紫花苜蓿茎叶水浸提液的质量浓度为0.05，0.08和0.10 g/mL时，其对无芒雀麦和多年生黑麦草种子发芽率、幼苗高度和根长抑制率的平均值分别为20.39%，28.42%，37.00%和35.43%，46.77%，63.99%。【结论】无芒雀麦对紫花苜蓿化感抑制作用的适应性和抵抗能力比多年生黑麦草强，更适合与紫花苜蓿混播。 |
| 关键词: 紫花苜蓿 水浸提液 化感效应 无芒雀麦草 多年生黑麦草 |
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| 基金项目:内蒙古自治区2012年应用技术研发资金计划项目“优良牧草新品种培育及优质草产品加工关键技术研发” |
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| Allelopathic effect of aqueous extracts from alfalfa stem and leaf on two gramineous forages |
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SUN Lin, REN Xiuzhen, GE Gentu,et al
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Inner Mongolia Agricultural University，et al
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| Abstract: |
| 【Objective】The effect of aqueous extracts from alfalfa stem and leaf at different concentrations on the germination and prior seedling growth of Bromus inermis Leyss and Lolium perenne L.was discussed in this study.【Method】The effect of aqueous extracts from alfalfa stem and leaf with concentrations of 0.05,0.08,and 0.10 g/mL on seed germination rate,seedlings length,and root length of B.inermis Leyss and L.perenne L. was investigated with petri dish filter paper method compared with distilled water method.【Result】Inhibitive effects of aqueous extracts from alfalfa stem and leaf with different concentrations on seed germination,seedling length and root length of B.inermis Leyss and L.perenne L. were obtained.The inhibition enhanced as the increase of concentrations.The average inhibition rates of extracts with concentrations of 0.05,0.08,and 0.10 g/mL on seed germination rate,seedling length and root length of B.inermis Leyss were 20.39%,28.42%,and 37.00%,and those of L.perenne L. were 35.43%,46.77%,and 63.99%.【Conclusion】B.inermis Leyss had stronger adaptability and resistance than L.perenne L. against extracts from alfalfa.Thus,bromus inermis is more suitable for mixed sowing with alfalfa. |
| Key words: alfalfa aqueous extract allelopathic effect Bromus inermis Leyss Lolium perenne L. |
