extremely significantp < 0.01
LC = 62.58 + 1.45 × A + 1.67 × B + 1.55× AB − 2.88 × A 2 − 3.63 × B 2 The quadratic polynomial regression equation between the EE and the two factors was as follows: EE = 84.34 + 1.58 × A + 2.12 × B + 0.2500 × AB − 3.99 × A 2 − 3.79 × B 2 While the lack of fit was not significant ( p > 0.05), the differences between the various treatments of the EE and LC models were extremely significant ( p < 0.01).