Long-term potash application and wheat straw return reduced soil potassium fixation and affected crop yields in North China

Tan, Deshui; Liu, Zhaohui; Jiang, Lihua; Luo, Jiafa; Luo, Jiafa; Li, Jie; SCI

机构： Shandong Acad Agr Sci, Inst Agr Resources & Environm, Shandong Prov Key Lab Plant Nutr & Fertilizer, Minist Agr,Key Lab Wastes Matrix Utilizat, Jinan 250100, Shandong, Peoples R China; AgResearch, Ruakura Res Ctr, Hamilton, New Zealand; Chinese Acad Sci, Shenyang Inst Appl Sci, Shenyang, Peoples R China;

关键词： Long-term potassium fertilization Wheat straw North China Potassium fixation capacity Yield