When the increase of nitrogen, nitrogen photosynthetic efficiency increases the difference between front and rear ends, the front end is significantly higher than the rear end.
When the amount of nitrogen applied increases, the difference in nitrogen photosynthesis utilization between the front and rear ends increases, and the rear end is significantly higher than the front end.
When the amount of nitrogen application increased, the difference of photosynthetic efficiency between the front and the back end increased, and the back end was significantly higher than the front end.<br>