不同土壤类型有效硫含量。威海最主要的棕壤、潮土两大土壤类型耕层有效硫含

Different soil types available sulfur content. There are almost no differences in the available sulfur content in the plough layer of the two main types of brown soil and Chao soil in Weihai. The brown soil content is slightly higher, with an average of 35.76mg/kg, a variation of 1.62~172.3mg/kg, and a standard deviation of 21.19mg/kg , The coefficient of variation is high, the average is 35.76mg/kg, the variation range is 5.0~199.7mg/kg, the standard deviation is 21.23mg/kg, and the coefficient of variation is 60.14%. Except for brown soil, the effective sulfur content of brown soil is 33.1mg/kg, and the content of brown soil is low. The difference between tidal brown soil, white pulped brown soil, and typical brown soil is small. Among them, the content of tidal brown soil is the highest, and the average content is 39.83mg/kg, from high to low for each sub-category: tidal brown soil>white pulped brown soil>typical brown soil>brown soil. There is no obvious difference in the available sulfur content of each subgroup of the Chao soil, the salinized Chao soil content is slightly higher, the average is 36.15mg/kg, the variation range is 12.57~65mg/kg, the variation range is smaller, the content is more uniform; the Chao soil content is slightly lower , The average is 35.3mg/kg, the variation range is 5.0~199.7mg/kg, the variation range is large, and the content is uneven. The available sulfur content of each sub-category salinized Chao soil> Chao soil. <br>(2) The available sulfur content in different types of soil. The effective content of different types of land varies greatly. Orchards and vegetable fields are higher than grain fields. Orchards are the highest, with an average content of 38.13mg/kg, a variation of 1.62-98.5mg/kg, and a standard deviation of 21.29mg/kg; vegetable fields are slightly lower Orchard, the average content is 37.0mg/kg, the variation range is 5.9~86.8mg/kg, the standard deviation is 21.14mg/kg; the grain field content is the lowest, the average is 35.36mg/kg, lower than the average level, the variation range is 4.3~199.7mg/ kg, standard deviation 21.14mg/kg, large variation, uneven content

不同土壤类型有效硫含量。威海最主要的棕壤、潮土两大土壤类型耕层有效硫含量几乎没有差异，棕壤含量稍高，平均为35.76mg/kg，变幅1.62~172.3mg/kg，标准差21.19mg/kg，变异系数高，平均为35.76mg/kg，变幅为5.0~199.7mg/kg，标准差21.23mg/kg，变异系数60.14％。棕壤各亚类除棕壤性土有效硫含量33.1mg/kg，含量较低外，潮棕壤、白浆化棕壤、典型棕壤差异较小，其中潮棕壤含量最高，平均含量为39.83mg/kg，各亚类由高到低依次为：潮棕壤>白浆化棕壤>典型棕壤>棕壤性土。潮土各亚类有效硫含量差异不明显，盐化潮土含量略高，平均为36.15mg/kg，变幅为12.57~65mg/kg，变幅较小，含量较均匀；潮土含量略低，平均为35.3mg/kg，变幅为5.0~199.7mg/kg，变幅较大，含量不均衡。各亚类有效硫含量盐化潮土>潮土。<br>（2）不同用地类型土壤有效硫含量。不同用地类型有效含量差异较大，果园、菜地高于粮田，果园最高，平均含量为38.13mg/kg，变幅1.62~98.5mg/kg，标准差21.29mg/kg；菜地略低于果园，平均含量为37.0mg/kg，变幅5.9~86.8mg/kg，标准差21.14mg/kg；粮田含量最低，平均为35.36mg/kg，低于平均水平，变幅4.3~199.7mg/kg，标准差21.14mg/kg，变幅很大，含量不均衡

Available sulfur content of different soil types. The content of available sulfur in plough layer of brown soil and fluvo aquic soil in Weihai is almost the same. The content of brown soil is slightly higher, with an average of 35.76 mg / kg, a range of 1.62-172.3 mg / kg, and a standard deviation of 21.19 mg / kg. The coefficient of variation is high, with an average of 35.76 mg / kg, a range of 5.0-199.7 mg / kg, a standard deviation of 21.23 mg / kg, and a coefficient of variation of 60.14%. The content of available sulfur in brown soil was 33.1mg/kg in brown soil, and the difference among them was small. Among them, the content of Chao brown soil was the highest, with an average of 39.83mg/kg. There was no significant difference in the content of available sulfur in each subspecies of fluvo aquic soil. The content of salinized fluvo aquic soil was slightly higher, with an average of 36.15 mg / kg, with a range of 12.57-65 mg / kg, with a small range and a relatively uniform content; the content of fluvo aquic soil was slightly lower, with an average of 35.3 mg / kg and a range of 5.0-199.7 mg / kg, with a large range and unbalanced content. The content of available sulfur in each subspecies was higher than that in salinized fluvo aquic soil.<br>(2) Soil available sulfur content of different land use types. The results showed that the effective content of orchard and vegetable field was higher than that of grain field, the highest in orchard, with average content of 38.13mg/kg, range of 1.62-98.5mg/kg, standard deviation of 21.29mg/kg; vegetable field was slightly lower than orchard, with average content of 37.0mg/kg, range of 5.9-86.8mg/kg, standard deviation of 21.14mg/kg; grain field content was the lowest, with an average of 35.36mg/kg, lower than the average level, with a range of 4.3-199.7mg/kg, standard deviation of 21.14mg/kg The standard deviation is 21.14 mg / kg, which varies greatly and the content is not balanced<br>