潮土壤中每个子类的总氮含量是不同的。潮土壤中的总氮含量最高，平均为1.

The total nitrogen content of each sub-category in the tidal soil is different. The total nitrogen content in the tidal soil is the highest, with an average of 1.02g per unit kilogram. The total nitrogen content of all tidal soil subtypes is higher than that of saline soil. <br>(2) Soil total nitrogen content of different land use types. The average total nitrogen content of different types of land varies greatly. Among them, the total nitrogen content in the grain field is relatively high, with an average of 0.92g/kg, and the variation range is 0.1~2.96g/kg. The variation range is 0.43~1.0g/kg; the orchard has the lowest, the average is 0.6g/kg, and the variation range is 0.24~1.38g/kg

The total nitrogen content of each subspecies in the tidal soil is different. The total nitrogen content in tidal soils was the highest, averaging 1.02g per kg. The total nitrogen content of all tidal soil subtypes is higher than that of salted soil.<br>(2) The total nitrogen content of soil in different land use types. The average total nitrogen content of different types of land varies greatly. Among them, the total nitrogen content in grain fields is higher, the average size is 0.1 to 2.96g/kg, the variation is very large, the content distribution is not uniform, followed by vegetable land, the average content is 0.62g/kg, the change is 0.43 to 1.0g/kg;

The total nitrogen content of each sub group is different. The content of total nitrogen in fluvo aquic soil was the highest, with an average of 1.02 g / kg. The total nitrogen content of all subtypes was higher than that of saline soil.<br>(2) Soil total nitrogen content of different land use types. The average total nitrogen content of different types of land is very different. Among them, the total nitrogen content in grain field was higher, with an average of 0.92g/kg, with a range of 0.1-2.96g/kg, with a large range and uneven distribution; the second was vegetable field, with an average content of 0.62g/kg, with a range of 0.43-1.0g/kg; the orchard was the lowest, with an average of 0.6g/kg and a range of 0.24-1.38g/kg<br>