兰州新区黄土工程开挖边坡植被重建初期土壤水分初步研究

刘乐, 孙宏义, 蔡忠兰, 张建新, 李东泽

Preliminary study on the soil moisture of slopes of loess in Lanzhou New Area formed by engineering excavation in the early stage of revegetation

Le LIU, Hongyi SUN, Zhonglan CAI, Jianxin ZHANG, Dongze LI

表6 试验边坡3种整地类型土壤水分有效性

Table 6 Soil moisture availability in the three types of soil preparation in the test slope

整地类型 土壤深度/cm 土壤水分有效性 每天 喷灌 降水后喷灌 隔天 喷灌 无灌溉 （天然降水） 圆形坑 5 N - - - 条形坑 N - - - 圆形坑 10 - N - - 条形坑 - Z - - 圆形坑 15 - - N - 条形坑 - - N - 圆形坑 20 ~ 40 - - - N 条形坑 - - - N 原状坡样地 0 ~ 2 N N W N 2 ~ 10 N N W N 10 ~ 20 N N+ N N 20 ~ 30 N N+ N N 30 ~ 40 N N+ N+ N 40 ~ 50 N N+ N+ N