柠檬酸与土壤磷相互作用的研究进展-中国农学通报.PDFVIP

中国农学通报 2012,28(18):26-30 Chinese Agricultural Science Bulletin 柠檬酸与土壤磷相互作用的研究进展 房福力，李玉中，李巧珍，徐春英，董一威，郭智成 （中国农业科学院农业环境与可持续发展研究所农业部旱作节水实验室，北京100081） 摘 要：为了研究柠檬酸在土壤形成、物质循环等过程中所起的重要作用，综述了国内外近些年来柠檬酸 与土壤磷素相互作用的一些研究进展。主要内容包括：（1）柠檬酸的分泌及其分泌机理；（2 ）缺磷促进分 泌柠檬酸分泌状况；（3）柠檬酸对土壤磷吸附的影响；（4 ）柠檬酸对土壤磷解吸的影响；（5）人工添加柠檬 酸减少磷肥投入的效果。在实际生产中柠檬酸对土壤磷素及磷肥的作用研究有待于加强。 关键词：柠檬酸；磷；根分泌；吸附与解吸；磷肥利用率 中图分类号：S181 文献标志码：A 论文编号：2012-0417 ResearchAdvanceintheInteractionofCitricAcidandPhosphorousinSoils Fang Fuli, Li Yuzhong, Li Qiaozhen, Xu Chunying, Dong Yiwei, Guo Zhicheng (DrylandFarmingandWater-savingLaboratoryoftheMinistryofAgriculture, InstituteofEnvironmentandSustainableDevelopmentinAgriculture,CAAS, Beijing 100081) Abstract: In order to study the role of citric acid in soil genesis and material cycle, the advancement of interaction between citric acid and phosphorus had been discussed. The main contents were: (1) citric acid secretion and secretion mechanism; (2) citric acid secretion in phosphorus deficient; (3) effects of citric acid on adsorption of phosphate; (4) effects of citric acid on desorption of phosphate; (5) effects of manually adding citric acid to soils for reducing the application rates of in phosphorous fertilizers. Studies which were related of citric acid to phosphorus and phosphate fertilizer in the actual production remained to be strengthened. Keywords:citric acid; phosphorus; root exudation; adsorption and desorption; phosphate recovery rate 0 引言 控，以提高土壤和肥料磷生物有效性；（3）柠檬酸的命 在植物生长过程中，有机质分解、微生物代谢、根 运及对土壤磷素形态转化的作用；（4 ）可变电荷土壤中 [1-2] 系分泌及叶片分泌物脱落等过程均能产生柠檬酸 ， 柠檬酸的吸附特征；（5