Study On The Water-saving Effect Between Surge Irrigation And Sprinkler Irrigation Under The Deficit Irrigation Conditions

On the first factory in Shanxi Agricultural University, Institute of Soil slot into the indoor simulation experiments conducted Surge furrow and sprinkler irrigation, and then uses the information in Shanxi Agricultural University of corn to optimize experimental design outdoor test surge irrigation and sprinkler irrigation trials. Irrigation research achievements in learning, based on tests using the indoor and outdoor test soil bin test method of combining indoor soil bin study Surge Furrow, Infiltration After two kinds of irrigation sprinkler irrigation methods, respectively, and then in the outdoors on spring maize under fixed conditions Surge small furrow and sprinkler irrigation, compared spring corn germination rate, yield and irrigation water use efficiency. The main findings are as follows。The author first at the Shanxi Agricultural University Institute of plant soil tank was simulated test of surge furrow irrigation and irrigation indoor, then at the Shanxi Agricultural University of information of corn by optimal experiment design of outdoor surge irrigation furrow irrigation experiment and sprinkler test. Test method for combining indoor soil bin test and outdoor test, indoor soil bin of surge furrow irrigation, sprinkler irrigation after2kinds of irrigation water infiltration characteristics, and then in the outdoor respectively on spring maize was carried out under the condition of non sufficient irrigation surge furrow irrigation and irrigation, compared with spring maize seedling emergence rate, yield and irrigation water use efficiency. The main results are as follows.(1)the surge furrow irrigation and Irrigation Soil Moisture vertical distribution characteristics were analyzed, the main difference between irrigation and surge irrigation method with irrigation quota irrigation soil moisture content in the vertical direction is the distribution of the different depth range. In the soil bin test, sprinkler irrigation increased soil moisture is mainly focused on0-9cm (irrigation quota is10mm),0-15cm (irrigation quota is20mm),0-20cm (irrigation quota of30mm), while the surge furrow irrigation were measured in the ditch at the center (groove depth is20cm),21-40cm in the main set of soil moisture content in the (irrigation quota of10mm),21-45cm (irrigation quota is20mm),21-50cm (irrigation quota of30mm). (2) the surge furrow irrigation and irrigation conditions in the horizontal distribution of soil bin, surge furrow irrigation rate and soil water content in the horizontal direction difference is evident. Under sprinkler irrigation, soil water content distribution was more uniform in the horizontal direction, and under surge irrigation, soil moisture is concentrated in the ditch on both sides and the bottom after irrigation, wetting front oval shape.(3) the surge furrow irrigation and soil water content and distribution of irrigation sprinkler irrigation method. Then the distribution stage along with the evaporation process. Compared with irrigation, the surge furrow irrigation irrigation soil water distribution is more conducive to reduce the evaporation of soil moisture can be maintained for a long time, moisture content.In the outdoor field irrigation, surge irrigation water use efficiency of irrigation treatments was higher than that of irrigation treatment. In the irrigation quota under the condition of10mm, surge furrow irrigation water productivity is16.2kg/m3higher than that in irrigation, irrigation quota under the condition of20mm, surge furrow irrigation water production efficiency higher than9.6kg/m3in irrigation, irrigation quota under the condition of30mm, surge furrow irrigation water productivity is4.1kg/m3higher than that of sprinkler irrigation. Irrigation quota in the range of10mm-30mm irrigation quota is small,surge furrow irrigation water efficiency of orrigation is higher.