10种菊科植物水提液对小麦幼苗生长的影响

用小白酒草、黄鼠草、刺儿菜、一年蓬、苍耳、苦苣菜、旋覆花、紫菀、黄花蒿、野塘蒿等10种菊科植物的水提液,对小麦进行不同浓度的皿内沙培实验,分别对小麦的根长、苗高及鲜重等三项指标进行测定的统计结果表明：10种菊科植物水提液对小麦幼苗生长的影响依种类有差异,其中旋覆花、黄花蒿、野塘蒿、紫菀对小麦表现出明显克生作用,而小白酒草、黄鼠草则表现出一定的促生作用;刺耳菜、一年蓬、苍耳对小麦幼苗生长的影响不明显。

Effects of water extracts from ten plants of Compositae against wheat Seedling

With water extracts from Conyza canadensis(L.)Cronq,Lactuca chinensis Mak.,Cephalanoplos segetum(Bge.)Kitam.,Inula japonica Thunb.,Aster tataricus L.,Erigeron annuus(L.)Pers., Sonchus oleraceus L.,Artemisia annua L.,Xanthium sibiricum Patrin.,Erigeron crispus Pourr.,proceeding the experiment inside the container with different concentration to the wheat.Measured three index signs:the long of the root,the high of the seedling and the fresh weight.Statistics result showed that there are different influence on the wheat with different category or concentration. Inula japonica% Thunb.,%Aster tataricus L.have significant allelopathic effects on the wheat.Conyza canadensis(L.)Cronq., Lactuca chinensis Mak.have a little prompter, Cephalanoplos segetum(Bge.)Kitam., Erigeron annuus(L.)Pers.and Xanthium sibiricum Patrin.have no effects.