Effect Of Deep Tillage In Fallow Period With Nitrogen Fertilizer On Wheat Water Consumption Characteristics And Yield Formation

In order to find the best way to explore the efficient use of water and fertilizer in dryland wheat. The field test for dryland wheat plowing fallow period with different amounts of nitrogen fertilizer on the growth of water consumption, nutrient, nitrogen plant absorption and accumulation, yield, quality of research was taken in at Wenxi test base during 2014 to 2015, the main results are as follows:(1)Deep plowing technology in fallow period significantly improves the soil water storage at 100-300 cm at sowing stage, in particular to improve the 200-300 cm soil layer moisture, water consumption in the whole growth period significantly improves at 240-300 cm soil layer.With the increase of nitrogen increased water consumption, combined with nitrogen rate 180 kg·hm-2 strengthened the use of deep soil moisture;(2)Deep tillage in fallow period with nitrogen increased jointing stage to anthesis stage soil nitrogen and nitrate nitrogen of root layer, each soil content increases with increasing nitrogen rate, when the amount of nitrogen fertilizer 180 kg·hm-2 conducive to the absorption of wheat nitrogen nutrition on root;(3)Deep plowing in fallow period plant N rate was increased at each growth stage with the increase of nitrogen fertilizer, and whole grains nitrogen content was increased at maturity, nitrogen content of plants at each growth stage, each growth stages nitrogen accumulation volume, the nitrogen accumulation before anthesis and after anthesis contribution rate of grain maturity were all increased with the increase of nitrogen fertilizer. And all index were the highest combined with the amount of nitrogen fertilizer 180 kg·hm-2;(4) Deep plowing in fallow period with the nitrogen fertilizer promotes tillering during jointing to maturity, conducive to the formation of the group formed to build the greatest yield and biomass, in order to lay the foundation for high yield. Deep plowing at fallow period combined with the amount of nitrogen 180 kg·hm-2, wheat grain soluble sugar content, sugar content, starch content were increased, protein components content and protein yield reached the highest.Anyway, Deep plowing in fallow period combined with the amount of nitrogen 180 kg·hm-2improve water and fertilizer conditions in dryland wheat field soil, provide good conditions for growth, and ultimately achieve high yield,high quality and high efficiently.