The study looked at how different levels of water and nitrogen affected the growth of winter wheat. They found that giving the wheat 60-80% of the soil's water capacity and 150-300kg of nitrogen per hectare led to the highest chlorophyll content and photosynthetic rate. More nitrogen led to more nitrogen in the wheat stems, and the best combination was 60% water capacity with 150kg of nitrogen. This combination also had the highest nitrogen translocation and grain yield, showing it was the most efficient way to grow winter wheat.