【摘要】 以黄芪为试材,以甘草、苦参、大黄、黄连、麻黄5种中草药4个浓度的水浸液为供体,通过生物测定来研究黄芪化感作用。结果表明:不同中草药水浸液对受体种子萌发和幼苗生长的影响依据供体种类和水浸液浓度而有差异。苦参、甘草、麻黄、黄连水浸液对黄芪种子萌发抑制作用较强,大黄水浸液对黄芪种子萌发抑制作用较弱;苦参、甘草、麻黄的水浸液对黄芪幼苗的生长抑制作用较强,大黄、黄连水浸液对黄芪幼苗生长抑制作用较弱;5种中草药水浸液对黄芪化感作用随质量浓度的减低而逐渐降低。这说明黄芪与大黄、黄连连作效果好,当年种植大黄地育种出苗率高,其它几种中草药育种与连作效果比较差。更多还原

【Abstract】 Taking Astragalusm embranaceus as material,four concentrations extracts fromGlycyrrhizau ralensis,Sophorae flavescentis,Rheum palmatum L.,Coptis chinensis and Herba ephedrae were extracted as donors,and allelopathic with Astragalus membranaceus was tested by bioassay.The results showed that extracts of various Chinese herbal medicines had different effects on seedling germination and seedling growth of receptor according to donor kinds and infusion concentration,which was chiefly embodied in the three following aspects:as for seedling germination of Astragalus membranaceus,the extracts of Sophorae flavescentis,Glycyrrhiza uralensis,Herba ephedrae,Coptis chinensis(root)had stronger inhibitory effects,but the extracts of Rheum palmatum had the weaker inhibitory effects.The infusions of Sophorae flavescentis,Glycyrrhiza uralensis,Herba ephedrae had stronger inhibitory effects on seedling growth of Astragalus membranaceus.However,the extracts of Rheum palmatum,Coptis chinensis had the weaker inhibitory effects on seedling growth of Astragalus membranaceus.Theallelopathic effects of the five kinds of Chinese herbal medicines on Astragalus membranaceus decreased with the reduce of mass concentration.The combinations of Astragalus membranaceus with Rheum palmatum,Coptis chinensis had better effects of rotation.The field planted Rheum palmatum in current year showed the higher seedling emergence rate.The other kinds of Chinese herbal medicines had the bad effects on breeding and rotation.更多还原