摘要
通过设置3个灌水梯度(相对田间持水量:70%、50%、不灌水),研究了不同水分梯度下土壤水文时空动态变化。结果表明:通过灌溉的土壤持续时间内储水量、土壤含水量变化幅度以及高含水区范围都要明显大于自然降雨条件下的土壤水文。试验得出:对植被进行分段灌溉补水使其达到田间持水量的70%,可以有效的改变土壤水文性质,为植物生长创造良好的土壤水分环境。
The temporal and spatial dynamics of soil hydrology were studied under different moisture gradients by setting three irrigation gradients（relative to field capacity： 70%,50%,no irrigation）.The results showed that the water storage amount,the soil moisture and the high amplitude water area under irrigation were significantly larger than that under natural rainfall in duration time.It was concluded that the soil hydrology properties could be effectively changed through irrigating soil to reach the 70% of field capacity,which created a good soil moisture environment for plant growth.
出处
《节水灌溉》
北大核心
2011年第10期45-47,共3页
Water Saving Irrigation
基金
国家马铃薯产业技术体系建设专项基金资助项目(nycytx-15)
关键词
灌溉
土壤含水量
储水量
土壤水分环境
irrigation
soil water content
water storage amount
soil water environment
