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In this study, a pot experiment was conducted to study the effect of black soldier fly feces and distiller’s grains on the physicochemical properties of moderate saline alkali soil. Results showed that the application of insect feces and distiller’s grains significantly increased the contents of nitrate nitrogen, available phosphorus, available potassium and organic matter in the soil, and reduced soil pH. After the treatment of 2% insect feces mixed with 2% distillates, the available nitrogen content of saline alkali soil was the highest, which was 95.74% higher than that of the control. It can be seen that the combination of 2% insect feces and 2% distiller’s grains was best suited to improve the saline alkali soil properties under the condition of this experiment.

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