通过室内试验研究探讨 5 种含 K 矿物中 K 在不同溶液中的释放规律（释放量和释放速率）。结果表明，不同含 K矿物中 K 释放速率和释放量的顺序均表现为：黑云母＞蛭石＞金云母≥白云母＞钾长石，不同 K 矿物释 K 速率在酸溶液中差异最大，其次在钙和钠盐溶液中，在水中的速率差异最小，这主要是受其矿物本身结构的影响。不同离子对含 K 矿物中非交换态 K 释放的促进作用差异显著：H+＞＞Ca2+＞Na+＞H2O＞NH4+。随矿物 K 有效性增加，H+ 和 Ca2+ 对矿物 K 释放的促进作用越大，而且H+ 较 Ca2+ 对黑云母、金云母和长石中的 K 有更突出的促释作用。此外，Ca2+ 较 Na+ 显著促进了黑云母和蛭石中 K 的释放，但对其他矿物中 K 释放的影响两者无显著差异。NH4+ 则显著抑制了各种矿物中 K 的释放，对黑云母和蛭石的抑制作用更强于对金云母和白云母的作用。
The release disciplinarians, including cumulative K-release and release rate of potassium from five potassium bearing minerals under various solutions were studied. Results showed that the release rates of K from five K-bearing minerals under different solutions follow the order of biotite > vermiculite > phlogopite ≥ muscovite > feldspar. The diversity between the release rates of K from different minerals under the acid solution was significant, follow by the calcium and sodium solutions, the distill water reversed; it depended on the structure of the minerals. Different ions had different abilities to promote the release of non-exchangeable K from different minerals: H+ >> Ca2+ > Na+ > H2O > NH4+. With the increase of the availability of mineral K, H+ and Ca2+ had greater effect on mineral potassium release. Furthermore, the effects of H+ and Ca2+ on biotite, phlogopite, and feldspar were distinct. To vermiculite and biotite, Ca2+ accelerated the release of potassium distinctly rather than Na+. However there was no difference between Ca2+ and Na+ when they extracted other three types of mineral. However, NH4+ restrained potassium release from every kind of minerals remarkably, comparing to phlogopite and muscovite, the effects of restrain on vermiculite and biotite were stronger.
沈钦华,王火焰,周健民,杜昌文,陈小琴.含钾矿物中钾的释放及其与溶液环境中离子种类的关系[J].土壤,2009,41(6):862-868. SHEN Qin-hua, WANG Huo-yan, ZHOU Jian-min, DU Chang-wen, CHEN Xiao-qin. Dynamic release of potassium from potassium bearing minerals as affected by ion species in solution[J]. Soils,2009,41(6):862-868复制