上(shang)水(shui)(shui)石的(de)(de)實質是(shi)碳酸鈣苔蘚(xian)植(zhi)物化石,暄(xuan)而(er)又脆(cui),良好的(de)(de)吸(xi)水(shui)(shui)石吸(xi)水(shui)(shui)性(xing)(xing)特別強(qiang)。上(shang)水(shui)(shui)石由于暄(xuan)而(er)脆(cui)易于造型(xing),可隨意鑿槽、鉆洞(dong)(dong)(dong)、雕刻出(chu)各式(shi)各樣的(de)(de)形狀。上(shang)水(shui)(shui)石天然洞(dong)(dong)(dong)穴很多,有(you)的(de)(de)互相穿連通(tong)氣,小的(de)(de)洞(dong)(dong)(dong)穴如氣孔,這就是(shi)吸(xi)水(shui)(shui)性(xing)(xing)強(qiang)的(de)(de)主要原因(yin)。在上(shang)水(shui)(shui)石上(shang)的(de)(de)洞(dong)(dong)(dong)穴中,填上(shang)泥土可植(zhi)花草,大的(de)(de)洞(dong)(dong)(dong)穴可栽樹(shu)木(mu),由于石體吸(xi)水(shui)(shui)性(xing)(xing)強(qiang),植(zhi)物生長茂盛(sheng),開(kai)花鮮艷。上(shang)水(shui)(shui)石可以散發濕(shi)氣,用(yong)它造假山或盆景,都有(you)濕(shi)潤環境的(de)(de)作用(yong)。
上(shang)水石(shi)又(you)稱吸(xi)(xi)(xi)水石(shi),盆中蓄(xu)水后,頃刻可(ke)吸(xi)(xi)(xi)到頂端(duan)。石(shi)上(shang)可(ke)栽植野草(cao)、蘚苔,青翠蒼潤,為制作盆景的(de)佳石(shi)。 沙(sha)積石(shi),暄(xuan)而(er)脆(cui),但吸(xi)(xi)(xi)水性很強;石(shi)灰(hui)石(shi)硬(ying)度稍高(gao),結(jie)構(gou)比沙(sha)積石(shi)細密。上(shang)水石(shi)易于(yu)造型,由于(yu)暄(xuan)而(er)脆(cui),可(ke)隨(sui)意鑿槽(cao)、鉆(zhan)洞、雕刻出(chu)心中理想的(de)形象。