Canopy light distribution and its correlation with photosynthetic production in superhigh yielding cotton fields of Xinjiang, Northwest China Characteristics of Senescence and Antioxidant Enzyme Activities in Leaves at Different Plant Parts of Summer Maize with the Super-high Yielding Potential after Anthesis Effects of nitrogen application rate on light-response curves of flag leaves in super-high yielding winter wheat at grain filling stage Characteristics of Dry Matter Production and Accumulation and Super-High Yield of Japonica Super Rice in South China Plant-type Characteristics in Populations with Different Yield of Yongyou 12 Population Characteristics for Super-High Yielding Hybrid Rice Yongyou 12 (>13.5 t ha-1)