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本文对湖北省几种主要旱地土壤进行了硼的吸附－解吸实验，同时对这些土壤上油菜幼苗吸收硼进行了试验，并用Freundlich和Langmuir等温吸附方程对实验结果进行了拟合。从中发现，一些土壤硼的解吸存在着明显的滞后解吸现象，这种现象可用滞后系数（△K十△n）来定性描述。当△K十△n＞0．25，硼的滞后解吸比较明显。硼在土壤中的滞后解吸，原因较为复杂，实验结果表明，土壤无定形氧化铝和闭蓄态羟基氧化锰与硼的滞后解吸有明显的正相关。植物从土壤中吸收硼的数量与土壤硼的吸附－解吸特性有比较密切的关系，硼滞后解吸明显的土壤，其植物吸收硼的数量相对较少，如外源施硼，植物在一定程度上可克服土壤硼滞后解吸特性对吸收硼的影响。
In this paper, boron adsorption and desorption experiments were conducted on several main dryland soils in Hubei Province. At the same time, boron was absorbed by rapeseed seedlings in these soils. The experimental results were fitted by the Freundlich and Langmuir isothermal adsorption equations. It was found that some soil desorption of boron there is a significant desorption phenomenon, this phenomenon can be used lagging coefficient (△ K ten △ n) to characterize the description. When △ K ten △ n> 0.25, boron hysteresis desorption more obvious. The reason for the delayed desorption of boron in soil is complicated. The experimental results show that there is a clear positive correlation between amorphous alumina and closed manganese oxyhydroxide in the soil and the delayed desorption of boron. The quantity of boron absorbed by plants from soil is closely related to the sorption-desorption characteristics of boron in soil. After boron desorbs obviously soil, the quantity of boron absorbed by plants is relatively small, such as exogenous boron and plants to a certain extent Can overcome the boron boron desorption characteristics of boron on the impact of absorption.