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抽穗初期的湖南稷子根系对土壤中Ｎａ＋、Ｋ＋的选择性吸收（ＳＡ）能力很强，根层土壤中的有效性Ｎａ＋／Ｋ＋比约是其根系中Ｎａ＋／Ｋ＋比的１３倍；植株各部位间对Ｎａ＋、Ｋ＋的选择性运输（ＳＴ）能力是：ＳＴ４（叶鞘：叶片）值为２．２１，ＳＴ１（根系：茎）值为１．８８，说明叶鞘的选择性运输能力要强于根系，ＳＴ２（茎：叶鞘）值最低，可见茎的选择性运输能力很弱，ＳＴ３（茎：果穗）值最高，表明Ｎａ＋、Ｋ＋在向果穗中输入时有极强的选择性。叶片和果穗中的Ｎａ＋、Ｃｌ－含量及Ｎａ＋／Ｋ＋比较低，叶片和叶鞘中的Ｃａ２＋含量较高，果穗和茎中富含大量Ｋ＋。
The roots of H. yam at early heading stage showed strong ability of selective absorption of Na + and K + in soil, and the effective Na + / K + ratio in root soil was about 13 times that of Na + / K + in root system. The ability of selective transportation (ST) of Na + and K + in different parts was 2.21 for ST4 (leaf sheath: leaf) and 1.88 for ST1 (root: stem), indicating that the selective transport capacity of leaf sheath is stronger than that of root , ST2 (stems: leaf sheath) values ?? the lowest, showing the selective transport capacity of stems is weak, ST3 (stems: ear) the highest value, indicating that Na +, K + input to the ear when there is a strong selectivity. The contents of Na +, Cl- and Na + / K + in leaves and ear were relatively low, while Ca2 + content in leaves and sheaths was high, while those in ear and stem were rich in K +.