植物主要是通過根係來吸收礦質元素
，而各種植物吸收礦質元素又各有各的特點，主要表現在以下幾方麵：

(1)根gen係xi吸xi收shou礦kuang質zhi元yuan素su與yu吸xi收shou水shui分fen間jian的de關guan係xi。礦kuang質zhi元yuan素su隻zhi有you溶rong解jie於yu水shui才cai能neng被bei植zhi物wu吸xi收shou，水shui分fen直zhi接jie影ying響xiang礦kuang質zhi元yuan素su的de吸xi收shou和he運yun輸shu
，但dan兩liang者zhe之zhi間jian不bu成cheng正zheng比bi例li關guan係xi
，各ge具ju相xiang對dui的de獨du立li性xing。

(2)zhiwudegenduikuangzhiyuansujuyouxuanzexishoudetedian。genxixishouyanleilizideshuliangbuyurongyezhongdelizichengbili，shenzhitongyiyanleideyinyanglizi，yeyibutongbilijinruzhiwuti
，shideyingyangyedechengfenhesuanjianduzhujiangaibian。

(3)單鹽毒害離子間的拮抗作用。任何植物如在含單—yanleideyingyangyezhong
，zebunengshengchang，chengweidanyanduhai
，ruzaiqizhongjiarushaoliangqitayanlei
，zenengshiqidanyanduhaixiaochu，zhezhonglizijiannenggouxianghuxiaochuduhaidexianxiang
，jiaojiekangzuoyong。yinci
，quedinghexuanzeyingyangyepeifangshi
，yinggenjubutongzhongleidetexingxuanzeyingyangyepeifang。