College of Agriculture Nanjing Agricultural University Nanjing 210095 China;
Vegetable Research Institute Guangdong Academy of Agricultural Sciences Guangdong 510640 China;
College of Agriculture Nanjing Agricultural University Nanjing 210095 China;
Institute of Industrial Crops Jiangsu Academy of Agricultural Sciences Nanjing 210014 China;
College of Agriculture Nanjing Agricultural University Nanjing 210095 China;
Gossypium hirsutum L.; Crop straw; Inorganic potassium fertilizer; Reproductive growth; C-N balance;