A 22-month incubation experiment was conducted to study the effect of lime on clay dispersion, wet aggregate stability (WAS) and dissolved reactive phosphorus (DRP), using a heavy clay subsoil with an initial pH of 7.0 and 7.3 g kg⁻¹ of soil organic carbon. Lime was applied to achieve soil pH values of 7.5, 8 and 8.4. Clay dispersion decreased linearly with increased pH (corresponding to an increase in lime amount) for both lime types (R² = 0.44 for CaO; R² = 0.53 for CaCO₃, P < 0.05), with a decrease of 2–16 % (CaO) and 3–17 % (CaCO₃) compared with the control.

Both WAS and DRP followed piece-wise linear functions, with an increase and peak around pH 7.5–7.8, and a decline at higher pH (WAS: R² = 0.73 for CaO, R² = 0.68 for CaCO₃, P < 0.001; DRP: R² = 0.84 for CaCO₃, R² = 0.33 for CaO, P < 0.001). Wet aggregate stability increased on average by 13 % and 11 % at the lowest and intermediate levels, respectively, compared with the control. At the highest lime application rate, WAS was 6 % (CaO) and 8 % (CaCO₃) lower than in the control. These differences were probably caused by changes in electrical charge and in concentrations of soluble calcium and dissolved organic carbon (DOC) as the pH increased. More studies are needed to understand the processes in detail and to draw conclusions that are more robust.

22个月培养试验，研究了石灰的粘土分散液中的作用，湿骨料稳定性（WAS）和溶解活性磷（DRP），使用重粘土地基与7.0和7.3克千克的初始pH ^-1的土壤有机碳。施用石灰使土壤 pH 值达到 7.5、8 和 8.4。对于两种石灰类型（CaO 的R ² = 0.44；CaCO _{3 的}R ² = 0.53 ，P < 0.05），粘土分散度随着 pH 值的增加（对应于石灰量的增加）而线性降低，减少了 2–16 % ( CaO) 和 3–17% (CaCO ₃ ) 与对照相比。

WAS 和 DRP 均遵循分段线性函数，在 pH 7.5–7.8 附近增加并达到峰值，并在 pH 值较高时下降（WAS：CaO 的R ² = 0.73 ，CaCO _{3 的}R ² = 0.68 ，P < 0.001； DRP：CaCO _{3 的}R ² = 0.84 ，CaO 的R ² = 0.33，P < 0.001)。与对照相比，最低和中间水平的湿集料稳定性平均分别增加了 13% 和 11%。在最高石灰施用率下，WAS 为 6 % (CaO) 和 8 % (CaCO ₃) 低于对照。这些差异可能是由于随着 pH 值的增加，电荷以及可溶性钙和溶解有机碳 (DOC) 的浓度发生了变化。需要更多的研究来详细了解这些过程并得出更可靠的结论。