上(shang)水(shui)(shui)石的(de)(de)實質是碳(tan)酸鈣苔蘚植(zhi)(zhi)物化石,暄而又脆(cui),良(liang)好(hao)的(de)(de)吸(xi)水(shui)(shui)石吸(xi)水(shui)(shui)性特別強。上(shang)水(shui)(shui)石由(you)于暄而脆(cui)易于造(zao)型,可隨意鑿槽、鉆(zhan)洞(dong)、雕刻出各(ge)式(shi)各(ge)樣(yang)的(de)(de)形狀。上(shang)水(shui)(shui)石天然洞(dong)穴(xue)很多,有(you)的(de)(de)互相穿連通(tong)氣,小(xiao)的(de)(de)洞(dong)穴(xue)如氣孔(kong),這就(jiu)是吸(xi)水(shui)(shui)性強的(de)(de)主(zhu)要原因。在上(shang)水(shui)(shui)石上(shang)的(de)(de)洞(dong)穴(xue)中,填上(shang)泥土可植(zhi)(zhi)花(hua)草(cao),大的(de)(de)洞(dong)穴(xue)可栽樹木(mu),由(you)于石體(ti)吸(xi)水(shui)(shui)性強,植(zhi)(zhi)物生長茂盛,開(kai)花(hua)鮮艷。上(shang)水(shui)(shui)石可以散發濕(shi)氣,用它(ta)造(zao)假山或(huo)盆景,都有(you)濕(shi)潤環境的(de)(de)作用。
上水(shui)(shui)石(shi)(shi)(shi)(shi)又稱吸水(shui)(shui)石(shi)(shi)(shi)(shi),盆中(zhong)蓄水(shui)(shui)后,頃刻可(ke)吸到頂(ding)端。石(shi)(shi)(shi)(shi)上可(ke)栽植野草、蘚苔(tai),青翠蒼潤,為制作盆景(jing)的佳(jia)石(shi)(shi)(shi)(shi)。 沙積(ji)石(shi)(shi)(shi)(shi),暄(xuan)而脆,但吸水(shui)(shui)性很(hen)強;石(shi)(shi)(shi)(shi)灰石(shi)(shi)(shi)(shi)硬度(du)稍高,結構比(bi)沙積(ji)石(shi)(shi)(shi)(shi)細密。上水(shui)(shui)石(shi)(shi)(shi)(shi)易于造型,由(you)于暄(xuan)而脆,可(ke)隨意鑿槽(cao)、鉆洞(dong)、雕(diao)刻出心中(zhong)理想的形象。