为解决冀西北寒旱区春季土壤干旱、甜菜难以适期栽植与安全成活的问题，进行了地上式补水与地下式补水的润土效果模拟、不同保水剂用量对甜菜生长的影响以及机械化补水栽植效果等试验研究。结果表明，地下式补水所形成的倒锥体状湿润体，有利于向甜菜移栽苗供水；采取在鸭嘴式栽植器上加装由电磁阀控制的注水嘴，形成电磁阀注射式地下补水器，实现了甜菜地下式补水栽植的机械化作业；配合添加保水剂的纸筒甜菜育苗，机械化移栽成活率在96%以上，较传统手工移栽甜菜增产高达30.02%，减少移栽用水量48.05%，劳动效率提高1.8倍。综上，添加保水剂的育苗与机械化补水移栽，实现了甜菜机械化抗旱栽植生产。

Sugar beet is difficult to transplant because of the drought and cold conditions in the arid region of Northwest Hebei Province in early spring. To resolve this problem,we simulated the effects of humidifying soil with above and below-ground supplemental irrigation,investigated the dosage effects of water-retaining agent on growth and yield,and studied the effect of mechanized underground supplemental irrigation(USI).The results showed that the USI damped soil in an inverted cone shape that was advantageous to supply water for sugar beet seedlings.A USI device was invented by installing a nozzle controlled by solenoid valve on the duck-billed transplanter.This device enabled the mechanization of water supplementation in sugar beet transplantation.The combination of USI and water-retaining agent had achieved the sugar beet survival ratio of over 96%,increased the yield of sugar beet by 30.02%,reduced the water consumption for transplanting by 48.05%,and increased the labor efficiency by 1.8 times compared with traditional manual transplanting.This research realized the integration of agro-technique and agro-machine for successfully transplanting sugar beet in drought situation.