【摘要】 用ＮＦ处理葡萄、桃、梨、樱桃砧木Ｃｏｌｔ、苹果苗木根系，与适宜的ＮＡＡ处理做比较。结果表明，ＮＦ处理以上苗木根系１２～２４ｈ可极显著地增加根量并促进根的生长，消除根的先端优势，显著或极显著地增进新梢生长，且随苗木生长其作用愈加明显。各种果树适宜的质量浓度分别为葡萄１００ｍｇ／Ｌ，梨２０ｍｇ／Ｌ，桃２０ｍｇ／Ｌ，苹果５０ｍｇ／Ｌ。与同质量浓度的ＮＡＡ（适宜质量浓度）比较，除处理梨苗外，对根及新梢促进作用均好于ＮＡＡ处理。在梨和桃上表现比ＮＡＡ处理适宜浓度范围宽，高浓度在桃和Ｃｏｌｔ上表现比ＮＡＡ毒害作用轻。更多还原

【Abstract】 NF,a new complex rooting promoter for fruit trees,was developed by the authors in 1995.It was prepared conveniently and used easily.The test results suggested that different concentrations of NF have obvious promotingroot effects on different species included grape,peach,pear,cherry and apple,and better than NAA.After treatment,the new root number was increased and root growth was promoted obviously.The material also adavanced notably the shoot growth.Compared with NAA,NF has more wide limitation of the used concentration and lower degree of toxicity.The suitable dosages:grape,100 mg/L;pear,20 mg/L;peach,20 mg/L;apple,50 mg/L.更多还原