Effects of Delayed Nitrogen Fertilizer Application on Sink Source Characteristics, Dry Matter Accumulation and Grain yield of Machine-Transplanted Hybrid Indica Rice in Upper Reaches of the Yangtze River

• Wujun ZHANG, 
• Xiujian DUAN, 
• Xiong YAO, 
• Yongqun TANG, 
• Qiangming LIU, 
• Xianwei ZHANG, 
• Renpeng XIAO, 
• Xueyuan YU, 
• Ming WEN, 
• Jingyong LI