Effect of Different Irrigation Systems on Oil Sunflower Yield And Water Use Efficiency

In view of the shortage of water resources and the serious waste of water resources by flood irrigation for crops in Gansu Province, a field experiment on oil sunflower was carried out in Wuwei Central Irrigation Experimental Station in 2018. Three different irrigation quotas (120 mm, 150 mm and 180 mm)and one common border irrigation (210 mm) contrast treatment were set, and the EM50 was used to monitor the changes of soil water. The effect of different irrigation systems on the growth, yield, water consumption rule and water use efficiency of oil sunflower were discussed. The results showed that under the suitable irrigation condition (irrigation quota 180 mm, 4 times), the oil sunflower had the highest dry matter yield. Compared with the contrast treatment, the water use efficiency (WUE) increased by about 14% and the water saving was about 10%.