Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes
A high-efficiency microbial and oil-polluted technology, applied in the field of environmental remediation, can solve problems such as plant growth inhibition, the use of bacterial agents, and the impact of phytoremediation effects, and achieve the effects of promoting the degradation of petroleum hydrocarbons, improving the structure of the soil, and good removal effect
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[0017] Embodiment 1: the pot experiment that is carried out in Nankai University biological testing center
[0018] The polluted soil collected from Shengli Oilfield was air-dried, ground, and passed through a 2mm sieve. Sampling and determination of physical and chemical indicators such as total salt and total petroleum hydrocarbon content of the soil. The measured total petroleum hydrocarbon content of the soil is 6.19%, pH7.9, organic matter 0.58%; total N 2.75g kg -1 ; Total P, 0.11 gkg -1 . The determination results of different petroleum hydrocarbon components are as follows: saturated hydrocarbons 50.5%, aromatic hydrocarbons 20.8%, polar substances 27.7%.
[0019] The impact on soil salinity and germination under different water-to-soil ratio washing salt conditions, according to the results in Table 1, washing salt water to soil ratio should be greater than 0.75, at this time the soil salinity can be reduced from the initial 4.276% to 0.607, ryegrass can Normal ge...
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