生物炭及炭基肥影响农田土壤改良效应的研究进展

我国南方农田普遍存在土壤酸化加速、土壤肥力和质量不断下降、土壤微生物群落结构和功能失调等土壤退化现象。近年来,大量研究表明生物炭是一种应用前景广阔的土壤改良剂,而将其与肥料有效结合制成生物炭基肥,将在我国农田酸化土壤改良和作物增产等方面发挥重要作用。本文重点针对生物炭和生物炭基肥在农田生态系统中影响土壤改良的效应进行了综述,旨在为我国南方农田土壤改良和农业生产可持续发展提供参考。

RESEARCH PROGRESS IN IMPROVEMENT EFFECTS OF BIOCHAR AND BIOCHAR-BASED FERTILIZER ON CROPLAND SOILS

High input and low use efficiency of fertilizers is a common phenomenon during the cultivation process of agriculture fields in southern China, leading to accelerated soil acidification, constant decline in soil fertility and quality, as well as imbalances of soil microbial community structure and function. Recently, a large number of studies have showed that biochar is a kind of soil amendment with broad application prospects. Biochar can be mixed with fertilizer at a certain ratio to produce biochar-based fertilizers, which combine with both advantages of biochar and fertilizer, potentially to be used for improving acidification soils, crop growth and yields. In this paper, research progress in improvement effects of biochar and biochar-based fertilizer on agricultural soils was reviewed, aiming to provide scientific bases for the improvement of cropland soils and the development of sustainable agriculture production in southern China.