中文摘要：

棉花是新疆主要的经济作物,从化感角度探讨棉花生长状况,对于南疆经济的可持续发展具有重要意义。采用室内生物测定和生理试验的研究方法,以多种受体植物为研究对象,探讨棉花的化感作用和作用机理。结果表明,棉花根系分泌物对甜椒、玉米、白菜、萝卜、番茄均具有化感效应,对棉花自身则有自毒作用,随着水培天数增加,抑制效应逐渐加强;棉花根系分泌物对受体种子萌发、幼苗生长及酶活性有抑制或促进作用,不同天数处理的棉花根系分泌物对受体植物生长呈现＂低促高抑＂的规律。

英文摘要：

Cotton is a economic crops in xinjiang,it is of great significance to the sustainable development of southern xinjiang economy to explore the role of cotton growth from allelopathic effect. Bioassay and physiological experiment were adopted to explore the allelopathic effect and mechanism of cotton on several plant receptors, cotton root exudates has allelopathic effect on peppers, corn, cabbage, radish and tomato, and cotton itself has autotoxicity, its inhibition effect gradually strengthens with adding the water culture time; cotton root exudates inhibit or accelerate seed germination, seedling growth and enzyme activity of plant receptors. Growth indexes of plant receptors increase at low concentrations but decrease at high concentrations of cotton root exudates.