Abstract
The liquid of anaerobic fermentation from Livestock (LAFL) can supply nutrients for plants. Therefore, it should be beneficial to the growth of crops. The experiment was carried out with a view to study the effect of irrigation based on LAFL and separately, chemical fertilizer (CK) for ten kinds of crops. The results showed that the organic matter in the LAFL were slightly higher than those in the CK. In the LAFL, phosphorus (P) and potassium (K) content in the soil were all similar to CK. The content of calcium (Ca) and magnesium (Mg) in the soil after 5 months varied according to different crops. In addition, the content of iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn) in the soil of the LAFL were all lower. The sodium (Na) concentration in the soil of LAFL and CK before and after the test were all below 250 mg kg-1, indicating that the fertilization of LAFL did not significantly increase soil Na content and caused no soil salinization. Key words: Circular economy, friendly environment, soil properties, plant nutrition, salt damage.
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