试验表明，灌水是半干旱区甜菜生产的关键因素，不同的灌水时期和灌溉量对甜菜产质量的作用也不同，灌水多虽能提高甜菜产量，但相应降低了含糖，且灌水时间越迟，次数越多，含糖降低的越多。在宁夏南部山区的半干旱区，水源充足的地方应灌三水，灌溉量为158m3／亩．时间为6、7、9月；水源不足地方应灌二水，灌溉量106m3／亩．时间应为6、9月份。 The experiment shows that irrigation is the key factor of beet production in semi-arid area. Different irrigation periods and irrigation amount have different effects on the quality and yield of sugar beet. Although irrigation can increase the yield of sugar beet, the sugar content is reduced correspondingly and the later the irrigation time , The more the number, the more sugar to reduce. In the semi-arid mountainous area of ​​southern Ningxia, irrigated water should be irrigated to 158m3 / mu in areas with adequate water resources. The time is 6, 7, September; insufficient water should be irrigated two irrigation, irrigation 106m3 / mu. Time should be 6, September.