6种柑桔砧木苗单株鲜重均与土壤pH 值呈抛物线相关。其最适pH 为:软枝香橙6.5、枳橙6.4、红桔6.1、枸头橙5.9、红(木黎)檬5.4、大叶大花枳5.4。如以pH8时的单株鲜重相当最适生长量的百分数作为耐碱性,则为:软枝香橙87%、枳橙85%、红桔70%、枸头橙50%、红(木黎)檬25%、枳-5%。如以pH4时的单株鲜重相当最适生长量的百分数作为耐酸性,则为:红(木黎)檬76%、枳69%、香橙66%、枳橙64%、红桔60%、枸头橙56%。 The fresh weight of 6 citrus rootstocks was parabolic correlated with soil pH. Its optimum pH is: soft sticks orange 6.5, citrange 6.4, red orange 6.1, citrulline 5.9, red (Muli) lemon 5.4, big flower large red vine 5.4. For example, 87% of soft branch orange, 85% of citrange, 70% of red orange, 50% of citrus orange, red (wood Li) lemon 25%, trifoliate -5%. For example, the percentage of the most suitable fresh weight per plant at pH 4 is as follows: red (Muli) lemon 76%, citrus yellow 69%, orange 66%, citrange 64%, red orange 60% , Head citrus 56%.