Effects Of Irrigation Methods And Fertilization On Maize Growth And Soil Nutrients In Hetao Irrigation District

The test area is dominated by the Yellow River water irrigation.Sometimes the water supply time of the Yellow River is not the period of crop water shortage,which causes the crops to be supplied in time when water is needed,which affects crop growth.In this study,maize was used as the tested crop,and the effects of different irrigation methods and fertilization on corn growth and soil nutrient water were studied to explore the adaptation to local irrigation methods.The main results are as follows:1.The yield of pure drip irrigation with urea loading of 450 kg/hm2 is higher than that of conventional treatment.Pure drip irrigation can effectively improve water use efficiency and achieve local water-saving yield increase.Under the application of urea 225 kg/hm2,yellow irrigation 3 times+3 times of drip irrigation compared with yellow irrigation 3 times+2 times drip irrigation increased yield by 45%,yellow irrigation 3 times+4 times drip irrigation compared with yellow irrigation 3 times+2 times drip irrigation increased yield 44%,yellow irrigation combined with drip irrigation,drip irrigation times 3 times and 4 times are better,and 3 times+3 times drip irrigation can be used as the best choice.Yellow irrigation 3 times+4 times drip irrigation(urea of 450kg/hm2)and yellow irrigation 3 times+4 times drip irrigation(urea of 225 kg/hm2)can effectively reduce soil pH.2.Drip irrigation and yellow irrigation combined with simple drip irrigation,compared with pure yellow irrigation,can promote the growth of corn,corn yield increased with the number of combined drip irrigation.The demand for water and nutrients in different periods of corn is different,showing a trend of increasing and then decreasing after the growth period.Therefore,when the Yellow River water does not arrive in time,the appropriate supplemental drip irrigation in the middle period can increase the soil moisture content and achieve timely and appropriate amount.Irrigation,which promotes corn growth and increases corn yield.Drip irrigation combined with yellow irrigation can promote the absorption of nutrients by crops and increase the utilization rate of fertilizers,thus increasing crop yield.