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苜蓿根系土壤浸提液对3种植物种子萌发和幼苗生长的影响
引用本文:邹亚丽,王廷璞,刘艳梅,马伟超,张永强.苜蓿根系土壤浸提液对3种植物种子萌发和幼苗生长的影响[J].安徽农业科学,2009,37(26):12487-12489.
作者姓名:邹亚丽  王廷璞  刘艳梅  马伟超  张永强
作者单位:天水师范学院生化学院,甘肃天水,741001;天水师范学院生化学院,甘肃天水,741001;天水师范学院生化学院,甘肃天水,741001;天水师范学院生化学院,甘肃天水,741001;天水师范学院生化学院,甘肃天水,741001
基金项目:甘肃省555人才基金资助项目,天水师范学院院列项目 
摘    要:目的]探讨15龄和4龄的苜蓿根际土壤的不同浓度化感作用的强弱及其对后茬作物生长的影响。方法】将苜蓿土壤浸提液稀释成一系列浓度梯度,采用纸上萌发试验培养苜蓿、糜子和莜麦种子。结果]两个年龄苜蓿浸提液对莜麦种子萌发无影响,对糜子、苜蓿种子的萌发有显著的抑制作用,抑制力的强度为糜予〉苜蓿,且浓度越高,抑制作用越强,15龄苜蓿土壤浸提液的抑制力强于4龄。两个年龄的苜蓿浸提液对糜子的根长、苗高均无影响,但显著抑制了苜蓿的根系生长。4龄苜蓿能促进莜麦根系和幼苗地上部分的生长,随着土壤溶液浓度的增加,促进作用也增强。结论]15龄苜蓿根际土壤的化感作用强于4龄苜蓿,对糜子、苜蓿均有抑制作用,4龄苜蓿土壤能促进莜麦幼苗的生长,建议苜蓿后茬作物播种莜麦。

关 键 词:化感作用  苜蓿  自毒作用  促进作用

Effect of the Extract from the Soil around the Alfalfa Roots on Three Species of Plant Seed Germination and Seedling Growth
ZOU Ya-li et al.Effect of the Extract from the Soil around the Alfalfa Roots on Three Species of Plant Seed Germination and Seedling Growth[J].Journal of Anhui Agricultural Sciences,2009,37(26):12487-12489.
Authors:ZOU Ya-li
Institution:ZOU Ya-li et al(Biochemical Schoo of Tianshui Normal College,Tianshui,Gansu 741001)
Abstract:Objective] The ability of the allelopathy of the different concentrations of extracts from the soil around the alfalfa roots with 15 year-old and 4 year-old and its effect on following crop growth were researched.Method] The Medicago sativa L.,Panicum miliaceum L.and Avena nuda L.seeds were cultured on the paper containing the different concentrations of extracts.Results] There was not efficiency of the extracts from the soil around the Medicago sativa L.roots on seed germination of Panicum miliaceum L.,...
Keywords:Allelopathy  Alfalfa(Medicago sativa L  )  Autotoxicity  Promotion  
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