ABSTRACT

A pot experiment was carried out to identify the effect of biochar rates on the performance of Arbuscular mycorrhizal fungi (AMF) Rhizoglomus irregularis and the growth and phosphorus (P) uptake of maize (Zea mays L.) plants under calcareous soil conditions. Eight integration treatments, four biochar rates (zero (control) (B0), 5 (B1), 7.5 (B2), 10 g biochar/kg soil (B3)), and two AMF inoculations (untreated (NM) and inoculated with AMF (M)) were arranged in a randomized complete block design (RCBD) with 5 replicates. The results showed that biochar had a positive effect on the growth of maize, P uptake, and available P in soil. It was also found that this positive effect of biochar increases with increasing rates, but it was found that there were no significant differences between the two highest rates of biochar B2 and B3. Plants treated with AMF had an influential role in the maize growth and its elemental content of P, as well as increasing the availability of P in soil. However, it was found that biochar reduces the effect of AMF but does not completely discourage the activity of AMF. Therefore, it is recommended that under the same circumstances of this experiment, using a rate B2 of biochar and treated with AMF which having the highest maize plant growth and its elemental P content.

摘要

进行盆栽试验以鉴定生物炭速率对丛枝菌根真菌（AMF）不规则根瘤菌以及玉米（Zea mays L.）在钙质土壤条件下种植。八种整合处理，四种生物炭速率（零（对照）（B0），5（B1），7.5（B2），10 g生物炭/ kg土壤（B3））和两种AMF接种（未经处理（NM）并接种AMF） （M））以5个重复的随机完整区组设计（RCBD）进行排列。结果表明，生物炭对玉米的生长，磷的吸收和土壤中有效磷的吸收有积极作用。还发现生物炭的这种积极作用随速率的增加而增加，但是发现两种最高速率的生物炭B2和B3之间没有显着差异。经AMF处理的植物在玉米生长及其磷元素含量以及增加土壤中磷的利用率方面都具有重要作用。然而，已经发现生物炭降低了AMF的作用，但是没有完全阻止AMF的活性。因此，建议在该实验的相同情况下，使用生物炭的比率B2并用具有最高玉米植株生长和其元素P含量的AMF处理。