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作 者:许留兴 李仪芳 武丹 郑晋静 张建国[2] XU Liuxing;LI Yifang;WU Dan;ZHENG Jinjing;ZHANG Jianguo(School of Agriculture and Life Sciences,Zhaotong University,Zhaotong Yunnan 657000,China;South Pratacultural Center,South China Agricultural University,Guangzhou Guangdong 510642,China)
机构地区:[1]昭通学院农学与生命科学学院,云南昭通657000 [2]华南农业大学南方草业中心,广东广州510642
出 处:《种子》2022年第10期58-64,共7页Seed
基 金:广东省现代草牧业(羊)产业技术体系(2019 KJ 127)。
摘 要:为研究艾蒿浸提液对牧草的化感作用,设置3个浓度艾蒿浸提液T 1(6.25 mg/mL)、T 2(12.5 mg/mL)和T 3(25 mg/mL),研究不同浓度艾蒿浸提液对意大利黑麦草、鸭茅、水稗草、非洲狗尾草、紫花苜蓿和高羊茅等6种牧草种子萌发和幼苗生长的影响。结果表明,牧草种类和浓度对发芽指数、活力指数、抑制率和化感指数(除浓度对幼苗化感指数)等指标影响显著(p<0.05)。T 3处理下的发芽率化感指数和幼根化感指数显著高于T 1和T 2处理(p<0.05)。牧草种类和浓度对综合效应影响显著;随着艾蒿浸提液的浓度从T 1升高到T 3,综合效应显著增强(p<0.05)。在6种牧草中,艾蒿浸提液对鸭茅的抑制作用最强。T 3浓度对牧草种子的萌发和生长的抑制性最强。To study the allelopathic effect of the extract of Artemisia argyi on herbage,and the effect of three kinds of concentration treaments like T 1(6.25 mg/mL),T 2(12.5 mg/mL)and T 3(25 mg/mL)extracts used as stock solution on seed germination and seedling growth of six forage grasses,including Lolium multiflorum,Dactylis glomerata,Echinochloa crusgalli,Setaria sphacelata,Medicago sativa and Festuca arundinacea were studied.The results showed that forage species,concentration and their interaction had significant effects on germination index,viability index,inhibition rate and allelopathy index(except concentration on seedling allelopathy index)(p<0.05).The allelopathy index of germination rate and young root of T 3 were significantly higher than those of T 1 and T 2(p<0.05).Forage species and concentration and their interaction had significant effects on the comprehensive effect(p<0.001).With the concentration of Artemisia argyi extract increasing from T 1 to T 3,the comprehensive effect was significantly enhanced(p<0.05).The extract of Artemisia argyi had the strongest inhibitory effect on Dactylis glomerata.T 3 concentration had the strongest inhibitory effect on the germination and growth of herbage seeds.
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