immature soil meaning in English

生土
未成年土
未成熟的土
未成熟土壤
未熟土

Choose two villages , direct against the stone material building , wooden building , immature soil architecture , blue brick building , the red brick building , within the same period , carried on temperature survey . the time to measure each site is roughly one week
选择了两个村落,针对石建筑、木建筑、土建筑、青砖建筑,红砖建筑,在相同时段内,进行了温度测量,每次测量的时间大致为一个星期。