Research on Abundant and Scarce Indices of Available K in Brassica parachinensis Soils and Reasonable Amount of K Fertilizer

• HE Xin-zhou, 
• Lü Ye-cheng, 
• WAN Yun-qiao, 
• CHEN Qiong-xian, 
• CAO Jian, 
• ZHANG Bai-ge, 
• YANG Qiu, 
• Li Miao-han, 
• GAO Hui-nan