内蒙古引黄灌区适宜秋浇定额研究

Research on the suitable autumnal irrigation quota in Yellow River irrigation areas of Inner mongolia

秋浇是内蒙古引黄灌区一种传统的洗盐压碱灌溉制度,秋浇用水量是灌区一年中灌水量最大的一次。以典型试验资料为依据,通过对不同秋浇定额灌溉条件下春播前土壤水盐条件、土壤的脱盐效果和增水效果的对比分析,研究提出内蒙古引黄灌区基于节水的适宜秋浇定额为1 500 m3/hm2。

The autumnal irrigation is a traditional irriation schedule for washing salt and decrease alkali and once maximum irrigation volume in whole year in Yellow River irrigation areas of Inner Mongolia.Based on typical test data,through contrast analysis of soil water-salt conditions,soil water desalination effect and soil moisture keeping effect under the different autumnal irrigation quota,the paper put forward the water saving and suitable autumnal irrigation quota that is 1 500 m3/hm2 in Yellow River irrigation areas of Inner Mongolia.