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作 者 ：陈屏昭;何嵋;袁晓春

期 刊 ：应用生态学报 2007年 18卷 02期 页码：327-332

关键词：橙；

摘 要 ：用营养液培养的方法，研究了施NaHSO₃溶液对缺硫脐橙光合生理特性的影响.结果表明,与对照相比,缺硫、缺硫+NaHSO₃溶液半程处理的脐橙叶片光合色素含量、可溶性蛋白质含量、净 光合速率(P_n)、初始荧光(F_o)、最大荧光(F_m)、光化学效率(F_v/ F_m)和电子传递速率(ETR)显著下降，处理35 d后光合色素含量分别下降了23.45%和11.32%,可溶性蛋白质含量分别下降了43.43%和25.30%，但缺硫+NaHSO₃溶液全程处理与对照间差异不大,说明可通过叶面喷洒NaHSO₃溶液的方式为植物提供硫元素，但当植株经长时间缺硫胁迫后，这种方式将难以矫正其缺硫症状.

Abstract:The study with solution culture showed that Citrus sinensis plants with sulphur deficiency
and with sulphur deficiency plus foliage spraying sodium bisulfite (NaHSO₃) halfway had notably
decreased photosynthetic pigment content, soluble protein content, net photosynthetic rate (P_n),
initial fluorescence (F_o), maximum fluorescence (F_m), photochemical efficiency (F_v/F_m) and el-
ectron transmit rate (ETR), compared with those having normal sulphur supply. After 35 days of
growth, their photosynthetic pigment content decreased by 23.45% and 11.32%, and soluble
protein content decreased by 43.43% and 25.30%, respectively, while no significant differences
were observed between the plants with sulphur deficiency plus foliage spraying NaHSO₃ throu-
ghout the experiment and those having normal sulphur supply, suggesting that foliage spraying
NaHSO₃ could be an effective way to supply sulphur element to the C. sinensis with sulphur
deficiency, but hard to rectify sulphur deficiency symptom when the plants suffered from a severe
sulphur deficiency stress for a long time.

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