Parameters optimization for compressing a mixture of decomposed rice straw and biochar into a seedling-raising mat

Transplanting is the prime growing pattern for rice production, and seedling raising an essential step of process. However, massive soil source complicated treatments needed are major issues. This study explored possibility using compressed-decomposed straw biochar from husk into a seedling-raising mat, to replace simplify seeding A quadratic rotation-orthogonal combination experiment was conducted investigate effect moisture content, pressure, residence time on formation mat. The regression models between compressing indicators process factors were established. results showed that following had significant bending strength formed mat (P < 0.01): pressure have extreme effects dimensional stability 0.01); but influence content insignificant > 0.05). parameters compression optimized verified Design-Expert software 8.0.6. 33%, 23.0 MPa, 61 s. prediction error less than 6% under this condition. may provide reference biomass compression.