Biochar and silkworm excrement effect in saline-alkali soil
Bioremediation of saline-alkali lands has attracted considerable attention due to its importance as land reserve. However, research on the effects of biochar and silkworm excrement (SE) on the rhizosphere microbial ecosystem of saline-alkali lands remains limited. In this study, field experiment was conducted to investigate the effects of varying biochar application rates, coupled with SE, on the rhizosphere microbial ecosystem of wheat in saline-alkali soil. Our results showed that the application of biochar or SE alone, or in combination, significantly reduced soil pH and electrical conductivity (EC), increased wheat yield. Furthermore, the application of biochar alone or in combination with SE significantly improved soil chemical properties, while the application SE alone significantly enhanced soil total nitrogen (TN), available nitrogen (AN).