不同蔬菜种类间化感作用研究

通过盆栽方式,研究了黄瓜、辣椒、番茄和白菜水浸液的化感作用。结果表明:黄瓜、辣椒、番茄和白菜水浸液均有自毒作用;黄瓜水浸液抑制辣椒、番茄的种子萌发和幼苗生长,抑制白菜幼苗根系的伸长;辣椒水浸液对黄瓜种子萌发和根系生长产生抑制作用,经辣椒水浸液处理过的番茄、白菜种子萌发和幼苗生长均受到抑制;番茄水浸液促进了黄瓜、白菜幼苗生长,却对2者根系生长表现出抑制作用,经番茄水浸液处理后的辣椒种子发芽率、苗高、根长和鲜重与对照相比,均有所降低;白菜水浸液抑制了黄瓜、辣椒、番茄3种作物的种子萌发和幼苗的生长。通过隶属函数值可知,不同蔬菜作物的化感作用从强到弱的顺序为:白菜黄瓜辣椒番茄。

Research on Al elopathy between Different Kinds of Vegetables

Allelopathy of water extracts of cucumber, pepper, tomato and Chinese cabbage was studied by pot plant. The results show that water extracts of cucumber, pepper, tomato and Chinese cabbage have autointoxication and water extract of cucumber restrains pepper and tomato seed germination and seedling growth as well as inhibits Chinese cabbage seedling root elongation; Water extract of pepper restrains cucumber seed germination and its root growth. With the treatment of pepper water immersion, tomato and Chinese cabbage seed germination and seedling growth are restrained. Water extract of tomato promotes the seedling growth of cucumber and Chinese cabbage, but restrains their root growth. After tomato water immersion treatment, seed germination rate, height of seedling, root length and fresh weight of pepper are lower compared with original ones. Water extract of Chinese cabbage restrains seed germination and seedling growth of cucumber, tomato and pepper. It is known by subordinate function value that the order of the allelopathy of various vegetables from strong to weak is Chinese cabbage＆gt; cucumber＆gt; pepper ＆gt; tomato separately.