【摘要】 将红檬实生苗培养于改良无土基质中，接种泡囊－丛枝菌根Ｇｌｏｍｕｓｃｉｔｒｏｃｏｌｕｍ，以不接种菌根为对照，并分别施用含氮量相等的３种氮肥，即硝酸按（ＮＯ３－Ｎ）、尿素（ＮＨ２－Ｎ）和硫酸铵（ＮＨ４－Ｎ）。接种菌根１６周后，施不同氮肥的红檬实生苗均有效地感染了菌根，并促进了植株的生长。试验证明，红实生苗施硝态氮（ＮＯ３－Ｎ）使植株的菌根依赖性有明显提高。更多还原

【Abstract】 Canton lemon(Citrus limomia Osbeck)seedlings grown in modified soillessmedium were inoculated with versicular-arbuscular mycorrhizal(VAM)fungus Glomuscitrocolum,and noninocuiated seedlings were used as control.Three equivalent N fertilizers,as ammoniurn nitrate(NO3-N),urea(NH2-N)and amrnonium shufate(NH4-N)wereseperately applied.All seedlings were effectively infected with mycorrhizae in 16 weeks afterVAM inoeulation and the plant growth had been promoted.The results showed that theapplication of NO3-N significantly enhnced the mycorrhizal dependency of plants.更多还原