The results showed that the effect of straw returning on available K and non-exchangeable K were more notable than mineral K and total K.
试验表明，秸秆还田对土壤速效钾、非交换钾的影响最大，对矿物钾和全钾的影响很小。
For different K levels, the most part of K absorbed by wheat is obtained from non exchangeable sources, among which the difference for mineral potassium is of relatively more significant.
在不同钾水平条件下，它们吸收利用土壤中的钾大部分来自非交换性钾源，其中矿物钾差异比较显著。
For different K levels, the most part of K absorbed by wheat is obtained from non exchangeable sources, among which the difference for mineral potassium is of relatively more significant.
在不同钾水平条件下，它们吸收利用土壤中的钾大部分来自非交换性钾源，其中矿物钾差异比较显著。
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