Supported by the Knowledge Innovative Program of the Chinese Academy of Sciences (No.KSCX2-YW-N-002);the National Key Basic Research Program of China(No.2007CB109301);the National Natural Science Foundation of China(No.40971176);the International Potash Institute China Project
Soil potassium (K) deficiency has been increasing over recent decades as a result of higher inputs of N and P fertilizers concomitant with lower inputs of K fertilizers in China; however, the effects of interactions...