Study On Suitable Drip Volume In Yield Formation Period And Peanut Growth Characteristics And Yield Response

Two tests were set up in 2015,and A Single Drip Irrigation Test was conducted at the Mazhuang test site.The experiment was based on rain support at the end of the podding period,six drip irrigation treatments were 5,10,15,20,25,30 mm,rain and furrow irrigation as a control.Compare the different treatments yield and water use efficiency.The second experiment,Cycle Drip Irrigation Experiment,was carried out in the agronomy experimental station of Shandong Agricultural University,and the water was introduced from the podding stage.Each drip irrigation volume was set at 5,10,15,20 mm,rain as a control.Soil relative humidity in 0-60 cm soil layer was determined,20 cm as a soil layer.Drip when the soil relative moisture content dropped to about 50%.Compared the yield and water use efficiency of different treatments.In 2016,Cycle Drip Irrigation Experiment was carried out on the dry shed of the agronomy experimental station.Each drip irrigation volume was set at 5,10,15,20 mm respectively,rain and furrow irrigation as control.The soil moisture of 0-20 cm soil layer was recorded.Drip when the relative water content dropped to 50% approximately.The plant growth and physiological indexes were determined,and the yield components were analyzed.The main findings are as follows:(1)The irrigation drip cycle of Cycle Drip Irrigation Experiment was about 4 days for each irrigation treatment of 5 mm,about 4 to 5 days for 10 mm treatment,about 7 days for 15 mm treatment,and about 8 to 9 days for 20 mm treatment.(2)In Single Drip Irrigation Test,the drip irrigation treatments’ yield and water use efficiency are high,and drip irrigation volume of 10 mm,15mm is the best treatment,furrow irrigation water consumption is large but did not show a greater yield effect,so Water use efficiency is low.The results of two years of Cycle Drip Irrigation Test showed that each drip irrigation volume of 5mm treatment’s yield was the lowest,the treatment yield was the highest at 20 mm,and the treatment with 10 mm and 15 mm was not much different in two years.(3)From the point of plant traits,the effect of different drip irrigation on plant traits was not significant.Furrow irrigation promoted the vegetative growth of the plant,but the number of green leaves decreased,and the yield and water use efficiency not high.The nutrient growth of the treated plants with high irrigation volume first reached a higher value.and the main stem of the drip irrigations was consistent at harvest period.