摘要： 河北土壤全硼平均25.9ppm，变幅2-75ppm。用沸水5分钟提取的有效硼平均0.50ppm，变幅0.02-9.38ppm。全省61.8%的耕地有效硼在临界缺乏值（0.5ppm）以下，0.51-1.0ppm中硼耕地占32.5%，>；1.0ppm高硼耕地仅占5.7%。土壤硼含量决定于成土母质。在成土过程中数量消长期与成土条件，土壤质地、有机质、碳酸钙、pH等有关。本文讨论了它们之间的数量关系。

关键词: 土壤硼, 含量分布, 河北省

Abstract: The level of total boron of soil in Hebei is 25.9 ppm in average and changes from 2 to 75 ppm.The content of available boron in soil extracted in boiling water in 5 minutes is 0.50 ppm in average and changes from 0.02 to 9.38 ppm.The available boron content of soil in 61.8% of cultivated land of this province is below the critical value(0.50 ppm).The boron content in 32.5% of cultivated land is on the middle level(0.51-1.00 ppm).Only 5.7% of cultivated land is rich in teron content(>1 ppm).The boron content in soil depends upon the parent materials of soil.Growth and decline of its content is related to the condition of soil development,soil texture,organic matter,CaCO3 and pH.The relationship between boron and these factors is discussed in this paper.

Key words: Soil boron, Content and distribution, Hebei province