The application of biochar improves the nutrient supply efficiency of organic fertilizer, sustains soil quality and promotes sustainable crop production

Rapeseed meal, a nutritious organic fertilizer (OF), contributes to improving soil environment and crop productivity. However, there are also problems, namely slow fertilizer efficiency and low nutrient utilization during the growing season. This 2- year field trial was conducted to explore the effect of biochar addition on improving the nutrient availability of OF through a comparative study of vari- ous biochar application rates under rice-rapeseed rotation conditions. The find- ings...