Promoting plant yield and quality improvement in saline alkali land by using biomass organic fertilizer and reducing chemical fertilizer measures.

BACKGROUND AND AIMS: The agricultural development of saline alkali land has always been an important direction for improving land use efficiency and food production. The study aims to explore the effects of biomass organic fertilizer and reducing the use of chemical fertilizers on watermelons in saline alkali land, providing a scientific basis for the sustainable development of saline alkali agriculture. METHODS: The study selects a mixed application of biomass organic fertilizer and chemical fertilizer with different proportions, and compares the growth, yield, and quality of watermelon in saline alkali soil. RESULTS: The research results indicated that the biomass organic fertilizer improved the growth rate and yield of watermelon in saline alkali soil. Compared with conventional fertilization treatment, the combination of biomass organic fertilizer and weight loss significantly increased soil organic matter content and promoted watermelon growth. In addition, watermelon treated with biomass organic fertilizer also performed better in terms of quality, including better fruit size, soluble solid content, and vitamin C content than conventional fertilizer treatment. The study also found that applying organic biomass fertilizer and weight loss in saline alkali land can increase the yield and quality of watermelons, and have a significant improvement effect on soil nutrients. This fertilization method could effectively increase the soil organic matter content and provide a more suitable environment for the growth of watermelons. CONCLUSIONS: The above results indicate that the proposed combination has significant advantages in watermelon cultivation in saline alkali land, and is significant for the sustainable development of saline alkali agriculture.