| Experiment was conducted to study the effect of different tillage measures on soil physical porperties of winter wheat field.The results showed that, in no-tillage treatment, soil bulk density and soil hardness, increased;soil macro-aggregates dry sieving content increased by 3% and 5% over sub-soiling and deep plowing, but decreased by 5% compared with winter wheat soil preparatio;soil macro-aggregates wet sieving content increased by 11% and 32% over sub-soiling and deep flowing, but decreased by 42% compared with winter wheat soil preparation.At the harvest time, no-tillage could inhibit soil water evaporation, and soil water storage capacity was 373.1 mm, increasing by 17% and 8% over sub-soiling and deep plowing;with the increase of precipitation, the rate of water infiltration gradually reduced, and water infiltration rate of different tillage methods was in the order of no-tillage>sub-soiling >deep plowing. |