Utilization of soil residual phosphorus and internal reuse of phosphorus by crops

PeerJ

article

Mei Yang¹  Huimin Yang¹ 

[1] State Key Laboratory of Grassland Agro-ecosystems;Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs;College of Pastoral Agriculture Science and Technology, Lanzhou University

关键词: P cycle;    Soil residual P;    Leaf P resorption;    Agricultural system;    P management;    Phosphate-solubilizing microorganisms;   

DOI  :  10.7717/peerj.11704

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Phosphorus (P) participates in various assimilatory and metabolic processes in plants. Agricultural systems are facing P deficiency in many areas worldwide, while global P demand is increasing. Pioneering efforts have made us better understand the more complete use of residual P in soils and the link connecting plant P resorption to soil P deficiency, which will help to address the challenging issue of P deficiency. We summarized the state of soil “residual P” and the mechanisms of utilizing this P pool, the possible effects of planting and tillage patterns, various fertilization management practices and phosphate-solubilizing microorganisms on the release of soil residual P and the link connecting leaf P resorption to soil P deficiency and the regulatory mechanisms of leaf P resorption. The utilization of soil residual P represents a great challenge and a good chance to manage P well in agricultural systems. In production practices, the combination of “optimal fertilization and agronomic measures” can be adopted to utilize residual P in soils. Some agricultural practices, such as reduced or no tillage, crop rotation, stubble retention and utilization of biofertilizers-phosphate-solubilizing microorganisms should greatly improve the conversion of various P forms in the soil due to changes in the balance of individual nutrients in the soil or due to improvements in the phosphatase profile and activity in the soil. Leaf P resorption makes the plant less dependent on soil P availability, which can promote the use efficiency of plant P and enhance the adaptability to P-deficient environments. This idea provides new options for helping to ameliorate the global P dilemma.

【 授权许可】

CC BY