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以西瓜自身为受体,采用生物测定的方法,研究嫁接西瓜根系水浸液的化感作用。结果表明,与对照相比,0.01、0.02、0.04g/ml浸提液处理对种子萌发有化感促进作用,0.08g/ml浸提液处理表现为化感抑制作用,0.01g/ml和0.02g/ml处理化感强度较大。从西瓜幼苗生长状况来看,0.01g/ml和0.02g/ml根系浸提液处理促进根系生长或植株苗的生长,苗干重增加,对西瓜幼苗生长起化感促进作用,0.04g/ml和0.08g/ml浸提液处理对西瓜幼苗生长起抑制作用,0.08g/ml浸提液处理化感强度