Study Of Sowing Method And Fertilizer Application In Base Of "Three Techniques In Advance"of Dryland Wheat

The experiment was carried out in2012-2013wenxi test base dryland wheat Shanxi Agricultural University. A field experiment to study the leisure of dryland wheat farming supporting fertilizing, planting methods on0-300cm soil water storage, plant nitrogen uptake and accumulation affect the characteristics, quality and yield formation. Explore the effects of different cultivation measures on roots and water use efficiency in dryland wheat, dryland wheat in order to establish the "three early" technology supporting Cultivation Techniques system. The main results are as follows:(1) Research leisure growth characteristics of tillage on dryland wheat showed subsoiling mode model can improve over the winter to farmers heading0-300cm soil layer storage capacity, while flowering to maturity subsoiling mode mode was significantly lower than farmers; can significantly improve the utilization of natural precipitation; may improve plant nitrogen content, nitrogen accumulation in plants, stem+stem and sheath, husk+cobs, grain nitrogen accumulation at different growth stages, can significantly improve the operation of the former flower nitrogen the amount and the contribution of grain nitrogen, nitrogen accumulation after flowering, can improve all phases of nitrogen uptake, nitrogen uptake ratio of emergence to jointing, can significantly improve the efficiency of nitrogen uptake, nitrogen harvest index and nitrogen productivity. Can significantly improve the winter to heading, biomass at maturity, can improve spike, grain number, the theoretical yield, actual yield. Significantly increased grain protein content and protein yield can be increased after flowering grain albumin, globulin, gliadin, gluten content. Eventually said to subsoiling mode better.(2) Supporting the fallow period tillage sowing methods to improve winter mulching-mature period0-300cm soil water storage capacity of soil; natural rainfall use efficiency; improve plant nitrogen accumulation and improve the yield and quality. With nitrogen after each growth characteristics of Wheat increased. Deep loose casual than the whole film mulching with Dibble and drill casing has a better effect of water and water conservation.(3) Leisure studies of nitrogen fertilizer on crop water use efficiency showed subsoiling mode model can improve over the winter to farmers heading0-300cm soil layer storage capacity, utilization of natural precipitation and improve nitrogen accumulation volume and increase production quality. With nitrogen after each growth characteristics of Wheat increased. In the deep pine mode+Nitrogen (180kg/hm2) better.(4) Leisure studies of subsoiling with Nitrogen and phosphorus fertilizer on dryland wheat water use efficiency, nitrogen operation, the yield and the quality of the show that nitrogen application under (180kg/hm2) conditions for winter wheat soil to heading0-300cm soil water storage capacity, utilization of natural precipitation, root activity and root growth characteristics of each of the indicators, plant nitrogen accumulation, yield and quality improved.Phosphorus content of150kg/hm2conditions can significantly increase the yield of wheat and quality to subsoiling mode+Nitrogen (180kg/hm2)+phosphate levels (150kg/hm2) better.Thus, by dryland wheat "three techniques in advance" water conservation technology research obtained the optimal technology model:"Deep subsoiling mode++Nitrogen (180kg/hm2)+Phosphate levels(150kg/hm2)."...