Abstract:

Influence on climate change to dry land spring wheat in the cold upland was tested and studied with sowing method from 2009 to 2010 in order to explore counter measures of crops planter under climate warming background. Results showed that: daily average temperature in entire period of duration of the early sowing spring wheat was lower than that of the late sowing spring wheat no matter under that kind of climate year's harvest in high and cold dry agricultural region. Temperature was high in entire period of duration of spring wheat that period of duration was short. Temperature was low in entire period of duration of spring wheat that period of duration was long. Precipitation increased in period of duration of spring wheat entire that period of duration extends. Rate of seedlings emergence of spring wheat was low, the density of spring wheat was small and drought resisting ability of spring wheat was strong under spring summer continually dry scene. Rate of seedlings emergence of spring wheat was high, the density of spring wheat was big and drought resisting ability of spring wheat was weak under hot summer scene. Main factors which decided height or low of spring wheat output were daily average temperature of young wheat ear idiophase and accumulated temperature and precipitation of grain formation. Daily average temperature was low in young wheat ear idiophase and accumulated temperature was high and precipitation was sufficient in grain formation, the output is high, otherwise the output was low.