This study was conducted to evaluate the tolerance of 1-year-old seedlings of ten subtropical ornamental tree species against a range of salinity levels of NaCl from May 2015 to October 2015. The levels were further enhanced from November to April 2017 as 100% survival was observed in the initial concentrations for all species. The seedlings were grown during the first week of April 2015 in 10″ earthen pots containing soil: farmyard manure (2:1), irrigated with tap water for 1 month followed by saline irrigation in May by maintaining electrical conductivity at 0.75, 1.00, 1.25, 1.50, 2.25, and 3.00 dS/m for 30, 40, 50, 60, 90, and 120 mM NaCl. Every 3 months, heights, relative leaf water content, and percent survival were determined; total soluble sugars of the upper leaves of each tree were quantified. All species exhibited consistent early growth and survival when supplied with 30, 40, 50 and 60 mM of NaCl. Koelreutaria paniculata, Ficus benjamina, Putranjiva roxburghii, Bauhinia purpurea and Millettia ovalifolia were sensitive to elevated salinity levels and did not survive at the highest salt concentrations of 90 and 120 mM.

这项研究旨在评估2015年5月至2015年10月10种亚热带观赏树种的1年生幼苗对NaCl盐度水平的耐受性。自100％存活以来，该水平从2017年11月至2017年4月进一步提高。观察到所有物种的初始浓度。在2015年4月的第一周，将幼苗种植在装有土壤的10英寸土盆中：农家肥（2：1），用自来水灌溉1个月，然后在5月进行盐水灌溉，将电导率保持在0.75、1.00、1.25对于30、40、50、60、90和120 mM NaCl分别为1.50、2.25和3.00 dS / m。每3个月测定一次身高，相对叶含水量和存活率。定量每棵树的上部叶的总可溶性糖。Koelreutaria paniculata，无花果榕，Putranjiva roxburghii，紫荆花和椭圆叶Millettia卵对高盐度敏感，并且在90和120 mM的最高盐浓度下无法生存。