Key Laboratory of Agro-ecological Processes in Subtropical Region and Changsha Research Station for Agricultural&Environmental Monitoring;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
College of Biological and Food Engineering;
Huanghuai University;
Zhumadian 463000;
China;
College of Resources&Environment;
Hunan Agricultural University;
Changsha 410128;
China;
biochar; manure fertilizer; nutrient management; P use efficiency; paddy soil; straw incorporation; water regime;