State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
Sci Total Environ. 2021 May 10;768:145106. doi: 10.1016/j.scitotenv.2021.145106. Epub 2021 Jan 29.
The intervention of human in phosphorus pool seems to be a vicious circle. The rapid population growth leads to the global food shortage, which leads to the massive use of phosphate fertilizer and the continuous exploitation of phosphate rocks. With the massive loss and fixation of phosphate fertilizer in the soil, the unavailable phosphorus in the soil becomes superfluous, while the phosphate mineral resources turn to scarce. Interestingly, exogenous carbonaceous materials, notably, biochar and humic substances, have been widely used as soil conditioners in agricultural production up to date, among other actions to interfere with the balance between the different phosphate species, which offer effective roles for increasing soil available phosphorus. This article reviews the regulation mechanisms of biochar and humic substances on phosphorus availability and circulation, including improving soil physicochemical characteristics, regulating microbial community structure, and directly interacting with phosphorus to affect the fate of phosphorus in soil. Finally, the prospects for future research directions are made, and it is hoped that the review of this article can arouse people's attention to the current plight of agricultural production and provide some methods for improving the efficiency of phosphate fertilizer use in the future.
人类对磷库的干预似乎是一个恶性循环。快速的人口增长导致全球粮食短缺，这导致了大量使用磷肥和磷酸盐矿的不断开采。随着土壤中磷肥的大量损失和固定，土壤中无法利用的磷变得多余，而磷酸盐矿物资源则变得稀缺。有趣的是，外源含碳物质，特别是生物炭和腐殖质，迄今为止已被广泛用作农业生产中的土壤改良剂，以干扰不同磷形态之间的平衡，这为增加土壤有效磷提供了有效的作用。本文综述了生物炭和腐殖质对磷有效性和循环的调节机制，包括改善土壤理化特性、调节微生物群落结构以及直接与磷相互作用，影响土壤中磷的命运。最后，对未来的研究方向进行了展望，希望本文的综述能引起人们对当前农业生产困境的关注，并为未来提高磷肥利用效率提供一些方法。
