The effects of temperature change on wheat field temperature

soil moisture change

and water use efficiency were studied by simulated temperature increase and decrease method. The results showed that the average 5 cm ground temperature of the warming wheat field and the cooling wheat field in the whole growth period increased by 0.85 oC and decreased by 2.57 oC

respectively

compared with the conventional wheat field. The simulated warming effect of the warming wheat field was winter > autumn > spring

and the simulated cooling effect of the cooling wheat field was spring > autumn > winter. The average volumetric water content of 5 cm soil layer in the whole growth period of the simulated warming and cooling wheat field was 3.76% lower and 4.84% higher than that of conventional wheat field

respectively. The study of soil water change in 0-200 cm soil layer of simulated warming

cooling wheat field

and conventional wheat field showed that the water storage of simulated warming and conventional wheat field (except mature stage) was lower than that of simulated cooling wheat field at all growth stages; the water consumption in 0-200 cm soil layer during whole growth period in warming wheat field was higher than that in simulated cooling and conventional wheat field

of which the proportion of 0-100 cm water consumption to 0-200 cm in simulated warming wheat field (55.72%) and conventional wheat field (55.14%) was lower than that of simulated cooling wheat field (63.45%)

while the proportion of water consumption of 100-200 cm to 0-200 cm in simulated warming wheat field (44.28%) and conventional wheat field (44.86%) was higher than that of simulated cooling wheat field (36.55%). The water use efficiency of simulated warming wheat field was lower than that of conventional wheat field and simulated cooling wheat field. This study can provide theoretical basis and technical support for the impact of climate warming on wheat production system.