The study looked at how different ways of preparing soil affect how efficiently winter wheat uses water. They found that some methods, like no-tillage with straw cover, can decrease water use efficiency, while others, like no-tillage with stubble standing, can increase it. The time of day also plays a role, with peak efficiency happening around midday. Keeping soil moist and increasing CO2 levels can help improve water use efficiency. Overall, adjusting certain factors can help winter wheat plants use water more effectively, potentially leading to better crop yields.