Different Patterns Of Surge Irrigation And Effects On Water Consumpation Characteristics Of Winter Wheat

Water scarcity,not to be supplemented in short-term and dependence of agriculture on water resources make the decision of the necessity of agricultural water conservation.Based on the surface irrigation,without changing the current irrigation conditions,there is great significance to research surge irrigation,interval alternate surge irrigation,interval fixed surge irrigation and effect on growth and water consumpation characteristics of winter wheat.The experiment was located in the Shandong Agricultural University Ma Zhuang experimental field from September 2015 to June 2016,point at the preset 3 surge irrigation pattern,compared with continuous irrigation.Each irrigation treatment set three group repeated,by using Jimai 22,irrigation experiment border was 120 metres in length and 1.5 met The experiment analysed irrigation parameters,soil moisture content,the content of each growth stage of wheat growth traits,and research 3 different surge pattern in irrigation on irrigation quality,growth and water consumption characteristics of winter wheat.The main experiment conclusions are as follows:1.Compared with continuous irrigation,surge irrigation,interval alternate surge irrigation irrigation group in second irrigation,interval alternate surge irrigation irrigation group in third irrigation,interval fixed surge irrigation irrigation group,interval fixed surge irrigation without irrigation group have obvious effect of water conservation(17.5%,32.6%,32.6%),enhance uniformity significantly(greater than 10%)and is conducive to irrigation water stored in the shallow soil(greater than 20%).2.Within 30 days after irrigation,in soil layer of 0~100 cm,2~5 d water content is higher than water content before irrigation.The amount of water consumed by continuous irrigation treatment was higher than 1.2 times,with 3 patterns of surge irrigation treatment.5~15 d,the amount of water consumed by continuous irrigation treatment was less than 0.75 times with 3 patterns of surge irrigation treatment.15~30 d,the amount of water consumed by continuous irrigation treatment was less than 0.9 times with 3 patterns of surge irrigation;The results show that 3 patterns of surge irrigation can better provide water for the growth of wheat.3.The uniformity of soil water content in each field has been improved by irrigation,but the improvement effect is different with different irrigation methods.4.Plant height,leaf area,tiller number,effective panicle number,panicle seed number affected by irrigation greatly.surge irrigation showed a greater advantage in the whole growth period.interval alternate surge irrigation and interval fixed surge irrigation comes second.For the effect of increase yield,surge irrigation increased yield by 30%,interval alternate surge irrigation increased yield by 26%,interval fixed surge irrigation increased yield by 17.5%.5.Form sow to reviving period,wheat growth is relatively slow,consumption of water is minimum.Form reviving period to jointing and booting period,water was consumed most.Form to jointing and booting period to ripping period comes second.Irrigation water productivity is 1.6times,1.9 times,1.8 times,1.8 times and 1.7 times higher than that of continuous irrigation.Water use efficiency of 3 pattern of surge irrigation is 1.5 times higher than that of continuous irrigation.3 pattern of surge irrigation has great influence on water conservation,is able to impove irrigation qulity,improve uniformity of irrigation and uniformity of water conten,keep irrigation water in Shallower soil layer,supplys water for wheat for longer time,obviously increase yield unit water production and unit irrigation wate production and obviously improve irrigation water productivity and water use efficiency.