| Under drip irrigation, four irrigation treatments, such as 295 mm, 345 mm, 395 mm and 445 mm were deisigned, and a furrow irrigation was also established as the control.According to the arrangement of irrigation and water requirement of soybean, the schedule of drip irrigation was: 35 mm for every 7 days in seedling stage, 45 mm for every 5 days in bloom-pod setting stage and pod setting-seed filling stage, 35 mm for every six days in seed filling-maturity stage, and with water consumption between 395 mm and 445 mm during the whole stage. |