由于施用混合肥料或厩肥使交换性钾过渡累积。
Accumulation of excessive exchangeable potassium is from the use of mixed fertilizers or manure.
结果表明，供试土壤非交换性钾释放特性和有效性与粘土矿物密切相关。
The results showed that the releasing characteristics and availability ofnonexchangeable K related remarkably to clay minerals.
这张照片显示了真核生物细胞外表面四重轴向的电压依赖性钾离子通道。
The image shows a eukaryotic voltage-dependent potassium channel viewed along the four-fold axis from the extracellular surface.
应用推荐