芒萁对几种杂草和农作物的生化他感作用

The Allelopathy of the Extract from Dicranopteris pedata on Several Weeds and Crops

本文研究了芒萁植株地上部分和地下部分水提液对几种杂草和农作物的生化他感作用。证明：（１） 芒萁水提液对供试杂草及白菜、萝卜的种子萌发有显著或极显著抑制作用，对全部供试幼苗的根生长和多数供试幼苗的苗高有显著抑制作用；（２） 地上部分的生化他感作用强于地下部分；（３） 芒萁对供试植物幼苗根生长的抑制作用强于对茎。

The allelopathy of the extracts of the above_grould and under_ground parts of Dicranopteris pedata on several weeds and crops was studied. The results showed that (1) The extracts inhibited the germnation of all the weeds, radish and Chinese cabbage, and the root growth of all the seedlings and the shoot height of majority of the seedlings; (2) the etract from the above_ground part had stronger allelopathic effect than that from the under_ground part; (3) the extract inhibit the growth of the root more strongly than the stem and foliage.