【摘要】 应用中子仪对内蒙古后山地区栗钙土水分周年动态的监测表明，这个地区的旱地农田土壤存在春季大量失墒期、雨季蓄墒期、秋季缓慢失墒期和冬季相对稳定期等四个阶段。在此还应用中子仪调查了坡地改梯田后等高田面的上部与下部的土壤水分差异及垂直分布，发现打破犁底层和钙积层的障碍是提高深层土壤水分利用率和作物生产潜力的关键。更多还原

【Abstract】 Monitoring data of soil moisture on chest soil in Houshan Area, Inner Mongolia showed four stages of the annual soil moisture: loss stage in the spring, storage stage in the rain season, gradual loss stage in the autumn and stable stage in the winter, Neutron probe was also used to investigate difference and vertical profile of soil moisture on contour fields. It was found that the sole and vertical profile of soil moisture on contour fields. It sas found that the sole and calcic horizon are the major two soil obstacle layers from which the key ways of raising water use efficiency (WUE) and crop yield potential can be found.更多还原