植物营养与肥料学报2013，19(3)：753-759 Jourmal of Plant Nutrition and Fertilizer
doi:10.11674/zwyf.2013.0327
亚磷酸盐作缓释磷肥对黄瓜体内养分吸收和
光合特性的影响楚雯瑛",2，段增强*
（1土壤与农业可持续发展国家重点实验室，中国科学院南京土壤研究所，江苏南京210008；
2中国科学院大学，北京100049）
摘要：本文以黄瓜为材料，采用营养液培养方法，研究了不同亚磷酸盐浓度对黄瓜植株各部位氮、磷养分含量，干重及根冠比，植株氮、磷总量以及叶片光合特性的影响。结果表明，黄瓜果实、叶片和根部氮含量随亚磷酸盐浓度的增加而增加，茎基部氮含量没有显著差异；果实和茎部磷含量随亚磷酸盐浓度的增加量增加趋势，根部磷含量呈降低趋势，叶片磷含量没有显著差异；亚磷酸盐浓度增加到一定浓度时，各部位干重显著降低，根冠比没有显著差异；植株氮、磷总量随亚磷酸盐浓度的增加有下降的趋势；黄瓜叶片净光合速率(Pn)随亚磷酸盐浓度的增加呈下降趋势。本研究结果显示，随着亚磷酸盐浓度的增加，植株表现出缺磷效应，对植株养分元素的吸收及光合作用产
生了不利影响。该文讨论了亚磷酸盐作为缓释磷肥的可行性。关键词：亚磷酸盐；黄瓜；养分吸收；光合作用
中图分类号：S642.2.601；S145.6
文献标识码：A
文章编号：1008505X(2013)030753-07
Effectsofphosphiteasaslowreleasephosphatefertilizeronnutrient
absorption and photosynthetic characteristics of cucumber
CHU Wen-ying'-2, DUAN Zeng-qiang'*
(I The State Key Laboratory of Soil and Sustainable Agriculture/ Institute of Soil Science, CAS, Nanjing 210008, China;
2 Unitersity of Chinese Academy of Sciences, Bejing 100049, China)
Abstract: Using nutrient solution cultivation technique, the effects of different concentrations of phosphite on nitrogen and phosphorus contents in root, shoot, leaf and fruit of cucumber, dry weight and roo/shoot, nitrogen and phosphorus contents per plant and photosynthetic characteristics were investigated. The results show that as the phosphite concentration in solution increased, the N contents in the fruit, leaf and root are decreased, while the N contents in shoot is not in statistically difference. The P contents in fruit and shoot are increased, while the contents in root are decreased, and the contents remain no differences in leaf. When the phosphite concentration is increased to some extent, the dry weights of all parts are decreased significantly, while the root/shoot ratios remain no differences, The N and P contents per plant are decreased and the net photosynthetic rates (Pn) are declined as the phosphite concentration in solution increased. These results suggest that as the phosphite concentration increased, cucumber is more likely to show a syndrome of phosphorus deficiency which reduces nutrient absorption and photosynthesis. The feasibility of phosphate being used as a slow release phosphate fertilizer is discussed. Key words: phosphite; cucumber; nutrient absorption; photosynthesis
磷是植物生长发育不可缺少的营养元素，既是植物体内许多重要有机化合物的组分，同时又以多
收稿日期：2012-10-31
接受日期：2013-0122
种方式参与植物体内各种代谢过程。磷对作物高产及保持品种的优良特性有明显作用]。作物主要
基金项目：农业部公益性行业项目"农业清洁生产与农村废弃物循环利用集成配套技术体系研究与示范"（200903011)资助。作者简介：楚妥瑛（1985—），女，重庆人，博士研究生，主要从事植物营养与肥料方面的研究。E-mail：wychu@issas.ac.cn
*通信作者Tel;02586881562，E-mail；aqduan@ issas.ac.cn
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