Study On The Effects Of Plastic Film Mulching And Irrigaiton Mode On Maize For Seed In Hexi Corirdor

Hexi Corridor is one of the main seed corn planting base in China, because of the rich resources offield in the area, big temperature difference between day and night, dry climate, irrigation facilities,such as congenital advantage prominent, However, in recent years as the climate warming, glacialretreat, snow line rise, coupled with the implementation of the heihe river water diversion project, theproblem of the shortage of water resources is more and more serious. At the same time, still is givenpriority to with the traditional flood irrigation farmland irrigation, water waste is serious,"watershortage" problem has severely hampered the progress of agricultural production "pace".This article in view of the Hexi Corridor crop water use efficiency is low, the reality of the watershortage problem increasingly prominent, half in the Hexi Corridor of Ganzhou area are membrane tilefurrow irrigation, half film culture flood irrigation, ridge tillage furrow irrigation, controlled (no ridge,not coated, flooding) four modes comparison test, at the same time, also half-and-half membrane tilecorn density, open ditch ditch irrigation mode time was studied, laminating and irrigation methodsinfluence on seed corn growth and yield, determine half membrane tile furrow planting density andoptimal furrow ridging time, in order to provide the necessary for the local development of water-savingagriculture theory and technology support. The main conclusions are as follows:(1) Laminating and binding energy to accelerate the seed furrow irrigation of maize, corn maturityof14days earlier, extending corn filling time, reduce soil bulk density, increase soil porosity, soil0-20cm increase soil temperature, increase plant biomass accumulation, increased leaf area, increasedplant height, stem girth increased maize plants, enhance plant resistance, especially resistance to lodging,increasing the number of rows ear, kernels per row to increase and improve kernel weight, improvemaize production. Combination of film and furrow ridge furrow semi-film membrane tiled andsemi-furrow compared semimembranous tile furrow because high germination rate, less investmentcosts, benefits above ridge furrow semi film.(2) In the second half of the film furrow pattern tile height, empty bar rate, bald long as theincrease of the density increased; ear length, rows per ear, kernels per row, kernel weight withincreasing density and decreasing. With the increase of production and then decreased density, suitabledensity tiling seed corn furrow semi film was100,050/hm2.(3) Seed corn ditching ridging can significantly improve the yield of maize grain. Due to differentproduction ditching ridging time there are differences, expand production to full leaf number is6,ditching the highest ridge, and fully expanded leaf number4, number5fully expanded leaves, fullyexpanded leaf number7ditching ridge yield differences are more significant, the best seed corn ditchingridging time come fully expanded leaf number is6.