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在人工模拟石油污染土壤条件下,采用盆栽方法探讨了在不同浓度石油和盐分胁迫下接种A M真菌对玉米生长、生理和养分吸收的影响。结果表明,在石油和盐分的胁迫下,无论接种与否玉米的生长均受到抑制,叶片细胞膜透性增加,叶绿素含量减少,过氧化氢酶活性降低。同时在石油和盐分胁迫下接种与不接种处理相比,A M真菌促进了玉米的生长,使玉米地上部、根、总生物量干重分别增加了4.05%～5.19%、42.55%～56.36%和3.77%～4.57%;使玉米叶片中叶绿素的含量增加,叶绿素a、b分别增加了10.19%～48.98%和62.50%～1120.50%;使石油和盐分对玉米叶片细胞膜的伤害度减小,过氧化氢酶活性提高,从而增强了玉米对石油和盐分胁迫的抵抗能力。另外,菌根侵染还改善了玉米磷的营养。
Under artificial simulated oil-contaminated soil conditions, pot experiments were conducted to investigate the effects of AM fungi inoculation on the growth, physiology and nutrient absorption of maize under oil and salt stress. The results showed that under the stress of oil and salt stress, the growth of maize inoculated or not was inhibited, the membrane permeability of leaves increased, the content of chlorophyll decreased and the activity of catalase decreased. AM fungi promoted the growth of maize and increased the dry weight of aboveground, root and total biomass of corn by 4.05% -5.19% and 42.55% -56.36%, respectively, compared with the non-inoculation under oil and salt stress 3.77% ~ 4.57%. The contents of chlorophyll in maize leaves increased by 10.19% ~ 48.98% and 62.50% ~ 1120.50% respectively, while the chlorophyll a and b increased by 15% Increased hydrogenase activity, thereby enhancing the corn resistance to oil and salt stress. In addition, mycorrhizal infection also improved maize phosphorus nutrition.