Effects Of Micro Sprinkler Irrigation Of Integrated Water And Fertilizer On Soil Water And Nitrogen Distribution And The Influence Of Water And Nitrogen Use Efficiency

In the 2015-2016 year in Shanxi Province,Linfen City Yaodu Han Village farm field trials.The effects of water and fertilizer integration on the growth of winter wheat-summer maize,soil water and nitrogen distribution,nitrogen uptake,water consumption and water use efficiency were studied.In order to explore the best water and nitrogen treatment,to increase production,improve water and nitrogen utilization and reduce environmental pollution to provide technical support and theoretical basis.The main conclusions are summarized as follows:1?In the winter wheat season,compared with CK,micro sprinkler irrigation of integrated water and fertilizer could increase the soil water content in the later stage of fertility,in which W2 significantly increased the water content of 0-60 cm in the heading stage,and the soil moisture content was 0-100 cm during the grain filling stage,and the soil moisture Deep into the soil.Summer maize season,CK treatment significantly increased soil moisture 0-100 cm,soil moisture has a tendency to seepage.The moisture content of soil treated with W2 was higher than that of W1,and the soil water content of the treatment was higher than that of small trumpet.2?In the winter wheat season,the N1 content of the soil treated with N2 and N3 was earlier than that in the soil layer,and the soil NO-3-N content was gradually increased from heading stage to grain filling stage.The soil NO-3-N content in the soil was increased and the content of NO-3-N in the soil was decreased during the harvesting period,and the content of soil NO-3-N was increased.Summer maize season,diffuse irrigation to reduce the whole growth period of 0-100 cm soil NH+4-N content.W2 exacerbated soil NO-3-N moving deep into the soil,but reduced the content of NH+4-N ripe soil;compared with small bell-dressing,large bell of Nitrogen improves the large bell to soil No content heading of 0-60 cm,and reduce the accumulation of soil NO-3-N in the deep soil.3?In the winter wheat season,the total dry matter accumulation of N3 treatment under W2 and W3 conditions was higher than that of N1 and N2 treatments,which increased by17.60%-22.17% and 17.27%-26.17% respectively.W2N3 could increase the total dry matteraccumulation and dry matter accumulation of grain,which was beneficial to increase the nitrogen accumulation and grain nitrogen nitrogen and total accumulation.The total dry matter accumulation of summer maize was W1> W2,and the total accumulation of nitrogen was opposite.The results showed that the average dry matter accumulation of wheat was higher than that of the large trumpet stage,but the total nitrogen accumulation and grain nitrogen accumulation were better than that of the small trumpet.The nitrogen accumulation of W2N6 was significantly increased,which was 8.73% and 9.99% higher than that of N4 and N5,respectively,the nitrogen accumulation was the best.4?In the winter wheat season,compared with the micro-jet treatment,the irrigation increased the leaf and stem and sheath transport.W2 and W3 were increased by 14.02%,9.78% and 3.04% and 4.86%,respectively.At the same time,the mean value of nitrogen translocation of W2 leaf nitrogen increased by 19.64% and 23.40%,respectively,compared with W1 and W3.In summer maize season,W2 condition,N6 treatment of leaf transport than N4 and N5 increased by 14.66% and 67.30%.5?In the winter wheat season,W2 and W3,the yield and water use efficiency of N3 were the highest,and W3N3 had the highest yield,but there was no significant difference with W2N3 treatment,both increased by 11.21% and 9.36% respectively.W2 treatment rate of nitrogen fertilizer were higher than W1 and W3,W2N3 treatment of nitrogen fertilizer utilization and nitrogen uptake efficiency of the highest.Summer maize season,the same amount of nitrogen,CK production was lower than micro sprinkler irrigation of integrated water and fertilizer.W2,the yield and water use efficiency of the treatments were not significantly different in the large bell mouth,and the yield and water use efficiency were the highest.The optimized nitrogen application efficiency improved the water use efficiency significantly.N4,N5 and N6 were 37.45%,24.94% and 24.66% higher than those of N1,N2 and N3,respectively.6?In the winter wheat season,micro sprinkler irrigation of integrated water and fertilizer reduces the proportion of water consumption before flower,and increases the proportion of water consumption after anthesis.The water consumption,water consumption intensity and water consumption model of W2 were increased by 18.52%,18.29%,16.63% and 50.64%,50.56% and 108.12% respectively compared with W1 and W3.In summer maize season,Compared with flooding,micro sprinkler irrigation of integrated water and fertilizer can reduce the water consumption amount,diurnal water consumption amount and waterconsumption percentage of small trumpet-large trumpet stage,and improve the water consumption amount,diurnal water consumption amount and water consumption percentage of tassel-maturity.In conclusion,the W2N3 is the best irrigation and fertilization mode.Summer maize season,W2N6 for the best irrigation fertilization model.The results showed that the residual nitrogen and soil were concentrated in the 0-60 cm soil layer,and the dry matter accumulation was increased,and the green leaf area was prolonged to promote the nitrogen and water uptake.So as to achieve yield and improve water and nitrogen use efficiency.