Effects of Biochar-Based Fertilizers on Energy Characteristics and Growth of Black Locust Seedlings

To understand ecological and energy problems in the karst area of Guizhou, China, effects using biochar-based fertilizers on characteristics different species black locust were studied. determine most suitable best rational application method biochar, an outdoor pot experiment was performed three (White-flowered (W), Hong-sen (S), Large-leaf fast-growing (L)). There six treatments: control (CK), MF, RH2MF, RH4MF, W2MF, W4MF (M—compost; F—NPK fertilizer; RH—rice husk biochar; W—wood biochar), where numbers represented mass ratio biochar to soil. Biochar-based had significant total organic carbon (TOC), nitrogen (TN), potassium (TK), branch gross calorific values (GCV), ash removal (AFCV) seedlings. RH4MF overall values. Different all indicators (except for TN); effect S better than that W L. Principal component analysis showed RH4MF-S highest comprehensive scores. In summary, (S) a high-quality may be used as fertilization forest development. This study provides reference future long-term research this area.