Abstract:126 samples of citrus orchards in Nanfeng and 51 samples from Quzhou were collected.Boron (B) contents in soil and leaf were investigated.Results showed that the soil in most regions of Nanfeng and Quzhou was in B deficiency.The average content of soil available B were 0.20 mg/kg in Nanfeng and 0.24 mg/kg in Quzhou,where the proportion of B deficiency soil were accounted for 98.4% and 96.1%.There was no obvious B deficiency in citrus leaf of Nanfeng and Quzhou.Only 12.70% orchards of Nanfeng exhibited leaf B deficiency.Sangtian Town of Nanfeng had the lowest average leaf B concentration (77.41 mg/kg),and there was 20.00% orchards in low level of leaf B concentration.The boron deficiency in citrus leaf of Quzhou was more serious than that in Nanfeng,and about 41.18% orchards of Quzhou existed leaf B deficiency.Leaf B concentration in Kecheng was the lowest (20.67 mg/kg) in Quzhou and about 54.84% of orchards lack of B.There were near half of the citrus orchards in B optimum and high levels.There was no significant correlation between soil available B content and citrus leaves B concentration in most citrus orchards of Nanfeng and Quzhou.There was a negative correlation in the area of Sangtian,Changshan,and Kecheng.The B nutrition status of soil and tree should be defined before applying B fertilizer properly.Soil combined with leaf fertilization may be the better way to supply B fertilizer in citrus orchards.