几种植物浸提液对水葫芦生长的抑制作用

Study on Several Floral Water Extracts' Inhibition of the Growth of Eichhornia crassipes

以马缨丹、银胶菊、小飞蓬和刺苋为供体,配制成1∶10(m∶V)和1∶20(m∶V)的水提液,采用室内生物监测法,比较其对水葫芦生长的抑制作用。试验结果表明:4种供体植物浸提液对水葫芦的生长均具抑制作用,抑制作用从强到弱顺序为马缨丹>银胶菊>小飞蓬>刺苋。

Using four plants,Lantana camara,Parthenium hysterophorus,Conyza canadensis and Amaranthus spinosus,as donors,water extracts with quality rations of 1∶ 10 and 1∶ 20 were formulated. Their inhibition of the growth of Eichhornia crassipe was compared by using allelopathy. The results show that all the extracts of the four plants have inhibition function on the growth of Eichhornia crassipes. The order from strong to weak of the inhibition function of the extracts is as follows： Lantana camara 〉 Parthenium hysterophorus〉 Conyza canadensis 〉Amaranthus spinosus.