With negative pressure gauge , neutron instrument and monitor research for depth of embedment of groundwater , we can obtain the changeable regulation of the soil moisture change in field and moisture use efficiency in field at childbearing period ; in five irrigation water , every time all has deep seepage , and the soil all can reach to saturation ; in childbearing period , the mutual change relation of irrigation water and groundwater is active 摘要通过负压计、中子仪、地下水埋深监测研究，得出生育期田间水分变化规律及土壤水分利用效率； 5次灌水均有深层渗漏，土壤都能达到饱；在生育期间，土壤水和地下水相互转换关系活跃。
The plants growing on the land surface can be affected by the occurrence and movement of water and salt in the aeration zone . in order to understand the characteristics of occurrence of water and salt in the aeration zone , we installed three tensionmeter systems . which includes 35 ceramic cups , in the soil of ejnqi oasis on the downstream of heihe river in inner mongolia province . the moisture potential distribution in aeration zone was observed , and the samples of water and soil were collected along the heihe river 为了了解绿洲包气带水分、盐份的分布特征，我们在黑河下游的内蒙古额济纳旗绿洲安装了3组35支负压计，观测包气带中的水土势，并沿黑河河谷从下游的额济纳旗到中游的张掖采集土样和水样，测试土壤的易溶盐和潜水的化学成分，从包气带中水土势和盐份两个方面来研究干旱地区水分和盐份在包气带中赋存和运移规律。
